uri: provide raw_content, parse json without double-decoding. Fixes #7586

Regression potential:
 - `raw_content` is written to `dest` file instead of decoded `content`
 - `raw_content` doubles module reply

test/integration/roles/test_uri/files/README

+The files were taken from http://www.json.org/JSON_checker/
+> If the JSON_checker is working correctly, it must accept all of the pass*.json files and reject all of the fail*.json files.
+
+Difference with JSON_checker dataset:
+  - *${n}.json  renamed to *${n-1}.json to be 0-based
+  - fail0.json  renamed to pass3.json   as python json module allows JSON payload to be string
+  - fail17.json renamed to pass4.json   as python json module has no problems with deep structures
+  - fail32.json renamed to fail0.json   to fill gap
+  - fail31.json renamed to fail17.json  to fill gap

test/integration/roles/test_uri/files/fail0.json

+["mismatch"}
\ No newline at end of file

test/integration/roles/test_uri/files/fail1.json

+["Unclosed array"
\ No newline at end of file

test/integration/roles/test_uri/files/fail10.json

+{"Illegal expression": 1 + 2}
\ No newline at end of file

test/integration/roles/test_uri/files/fail11.json

+{"Illegal invocation": alert()}
\ No newline at end of file

test/integration/roles/test_uri/files/fail12.json

+{"Numbers cannot have leading zeroes": 013}
\ No newline at end of file

test/integration/roles/test_uri/files/fail13.json

+{"Numbers cannot be hex": 0x14}
\ No newline at end of file

test/integration/roles/test_uri/files/fail14.json

+["Illegal backslash escape: \x15"]
\ No newline at end of file

test/integration/roles/test_uri/files/fail15.json

+[\naked]
\ No newline at end of file

test/integration/roles/test_uri/files/fail16.json

+["Illegal backslash escape: \017"]
\ No newline at end of file

test/integration/roles/test_uri/files/fail17.json

+{"Comma instead if closing brace": true,
\ No newline at end of file

test/integration/roles/test_uri/files/fail18.json

+{"Missing colon" null}
\ No newline at end of file

test/integration/roles/test_uri/files/fail19.json

+{"Double colon":: null}
\ No newline at end of file

test/integration/roles/test_uri/files/fail2.json

+{unquoted_key: "keys must be quoted"}
\ No newline at end of file

test/integration/roles/test_uri/files/fail20.json

+{"Comma instead of colon", null}
\ No newline at end of file

test/integration/roles/test_uri/files/fail21.json

+["Colon instead of comma": false]
\ No newline at end of file

test/integration/roles/test_uri/files/fail22.json

+["Bad value", truth]
\ No newline at end of file

test/integration/roles/test_uri/files/fail23.json

+['single quote']
\ No newline at end of file

test/integration/roles/test_uri/files/fail24.json

+["	tab	character	in	string	"]
\ No newline at end of file

test/integration/roles/test_uri/files/fail25.json

+["tab\   character\   in\  string\  "]
\ No newline at end of file

test/integration/roles/test_uri/files/fail26.json

+["line
+break"]
\ No newline at end of file

test/integration/roles/test_uri/files/fail27.json

+["line\
+break"]
\ No newline at end of file

test/integration/roles/test_uri/files/fail28.json

+[0e]
\ No newline at end of file

test/integration/roles/test_uri/files/fail29.json

+[0e+]
\ No newline at end of file

test/integration/roles/test_uri/files/fail3.json

+["extra comma",]
\ No newline at end of file

test/integration/roles/test_uri/files/fail30.json

+[0e+-1]
\ No newline at end of file

test/integration/roles/test_uri/files/fail4.json

+["double extra comma",,]
\ No newline at end of file

test/integration/roles/test_uri/files/fail5.json

+[   , "<-- missing value"]
\ No newline at end of file

test/integration/roles/test_uri/files/fail6.json

+["Comma after the close"],
\ No newline at end of file

test/integration/roles/test_uri/files/fail7.json

+["Extra close"]]
\ No newline at end of file

test/integration/roles/test_uri/files/fail8.json

+{"Extra comma": true,}
\ No newline at end of file

test/integration/roles/test_uri/files/fail9.json

+{"Extra value after close": true} "misplaced quoted value"
\ No newline at end of file

test/integration/roles/test_uri/files/pass0.json

+[
+    "JSON Test Pattern pass1",
+    {"object with 1 member":["array with 1 element"]},
+    {},
+    [],
+    -42,
+    true,
+    false,
+    null,
+    {
+        "integer": 1234567890,
+        "real": -9876.543210,
+        "e": 0.123456789e-12,
+        "E": 1.234567890E+34,
+        "":  23456789012E66,
+        "zero": 0,
+        "one": 1,
+        "space": " ",
+        "quote": "\"",
+        "backslash": "\\",
+        "controls": "\b\f\n\r\t",
+        "slash": "/ & \/",
+        "alpha": "abcdefghijklmnopqrstuvwyz",
+        "ALPHA": "ABCDEFGHIJKLMNOPQRSTUVWYZ",
+        "digit": "0123456789",
+        "0123456789": "digit",
+        "special": "`1~!@#$%^&*()_+-={':[,]}|;.</>?",
+        "hex": "\u0123\u4567\u89AB\uCDEF\uabcd\uef4A",
+        "true": true,
+        "false": false,
+        "null": null,
+        "array":[  ],
+        "object":{  },
+        "address": "50 St. James Street",
+        "url": "http://www.JSON.org/",
+        "comment": "// /* <!-- --",
+        "# -- --> */": " ",
+        " s p a c e d " :[1,2 , 3
+
+,
+
+4 , 5        ,          6           ,7        ],"compact":[1,2,3,4,5,6,7],
+        "jsontext": "{\"object with 1 member\":[\"array with 1 element\"]}",
+        "quotes": "&#34; \u0022 %22 0x22 034 &#x22;",
+        "\/\\\"\uCAFE\uBABE\uAB98\uFCDE\ubcda\uef4A\b\f\n\r\t`1~!@#$%^&*()_+-=[]{}|;:',./<>?"
+: "A key can be any string"
+    },
+    0.5 ,98.6
+,
+99.44
+,
+
+1066,
+1e1,
+0.1e1,
+1e-1,
+1e00,2e+00,2e-00
+,"rosebud"]
\ No newline at end of file

test/integration/roles/test_uri/files/pass1.json

+[[[[[[[[[[[[[[[[[[["Not too deep"]]]]]]]]]]]]]]]]]]]
\ No newline at end of file

test/integration/roles/test_uri/files/pass2.json

+{
+    "JSON Test Pattern pass3": {
+        "The outermost value": "must be an object or array.",
+        "In this test": "It is an object."
+    }
+}

test/integration/roles/test_uri/files/pass3.json

+"A JSON payload should be an object or array, not a string."
\ No newline at end of file

test/integration/roles/test_uri/files/pass4.json

+[[[[[[[[[[[[[[[[[[[["Too deep"]]]]]]]]]]]]]]]]]]]]
\ No newline at end of file

test/integration/roles/test_uri/handlers/main.yml

+---
+- name: stop SimpleHTTPServer
+  shell: start-stop-daemon --stop --pidfile {{ output_dir }}/SimpleHTTPServer.pid --exec {{ py2.stdout }}

test/integration/roles/test_uri/meta/main.yml

+dependencies:
+  - prepare_tests

test/integration/roles/test_uri/tasks/main.yml

+# test code for the uri module
+# (c) 2014, Leonid Evdokimov <leon@darkk.net.ru>
+
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+- name: set role facts
+  set_fact:
+    http_port: 15260
+    files_dir: '{{ _original_file|dirname }}/../files'
+    checkout_dir: '{{ output_dir }}/git'
+
+- name: verify that python2 is installed so this test can continue
+  shell: which python2
+  register: py2
+
+- name: start SimpleHTTPServer
+  shell: start-stop-daemon --start --pidfile {{ output_dir }}/SimpleHTTPServer.pid --background --make-pidfile --chdir {{ files_dir }} --exec {{ py2.stdout }} -- -m SimpleHTTPServer {{ http_port }}
+  notify: stop SimpleHTTPServer
+
+- wait_for: port={{ http_port }}
+
+
+- name: md5 pass_json
+  stat: path={{ files_dir }}/{{ item }}.json get_md5=yes
+  register: pass_md5
+  with_sequence: start=0 end=4 format=pass%d
+
+- name: fetch pass_json
+  uri: return_content=yes url=http://localhost:{{ http_port }}/{{ item }}.json
+  register: pass
+  with_sequence: start=0 end=4 format=pass%d
+
+- name: check pass_json
+  assert:
+    that:
+      - '"json" in item.1'
+      - item.0.stat.md5 == item.1.raw_content | md5
+  with_together:
+    - pass_md5.results
+    - pass.results
+
+
+- name: md5 fail_json
+  stat: path={{ files_dir }}/{{ item }}.json get_md5=yes
+  register: fail_md5
+  with_sequence: start=0 end=30 format=fail%d
+
+- name: fetch fail_json
+  uri: return_content=yes url=http://localhost:{{ http_port }}/{{ item }}.json
+  register: fail
+  with_sequence: start=0 end=30 format=fail%d
+
+- name: check fail_json
+  assert:
+    that:
+      - item.0.stat.md5 == item.1.raw_content | md5
+      - '"json" not in item.1'
+  with_together:
+    - fail_md5.results
+    - fail.results
+
+
+- name: check content != raw_content
+  assert:
+    that: item.content != item.raw_content
+  with_items:
+    - '{{ pass.results.0 }}'
+    - '{{ fail.results.14 }}'
+    - '{{ fail.results.15 }}'
+    - '{{ fail.results.16 }}'
+    - '{{ fail.results.27 }}'
+
+- name: check content == raw_content
+  assert:
+    that: item.content == item.raw_content
+  with_items:
+    - '{{ pass.results.1 }}'
+    - '{{ pass.results.2 }}'
+    - '{{ pass.results.3 }}'
+    - '{{ pass.results.4 }}'
+    - '{{ fail.results.0 }}'
+    - '{{ fail.results.1 }}'
+    - '{{ fail.results.2 }}'
+    - '{{ fail.results.3 }}'
+    - '{{ fail.results.4 }}'
+    - '{{ fail.results.5 }}'
+    - '{{ fail.results.6 }}'
+    - '{{ fail.results.7 }}'
+    - '{{ fail.results.8 }}'
+    - '{{ fail.results.9 }}'
+    - '{{ fail.results.10 }}'
+    - '{{ fail.results.11 }}'
+    - '{{ fail.results.12 }}'
+    - '{{ fail.results.13 }}'
+    - '{{ fail.results.17 }}'
+    - '{{ fail.results.18 }}'
+    - '{{ fail.results.19 }}'
+    - '{{ fail.results.20 }}'
+    - '{{ fail.results.21 }}'
+    - '{{ fail.results.22 }}'
+    - '{{ fail.results.23 }}'
+    - '{{ fail.results.24 }}'
+    - '{{ fail.results.25 }}'
+    - '{{ fail.results.26 }}'
+    - '{{ fail.results.28 }}'
+    - '{{ fail.results.29 }}'
+    - '{{ fail.results.30 }}'