If you convert the error string to bytes and embed it inside another
error string, you get

  Prefix:

  b'Embedded\nerror\nstring'

which is not what we want.

But we also don't want Unicode in error messages causing unexpected
UnicodeEncodeErrors when on Python 2.

So let's convert the error message into the native string type (bytes on
Python 2, unicode on Python 3).

Fixes #12752

* Don't throw away the full path of the module code being loaded,
  as this can cause conflicts when files of the same name are being
  instantiated
* Generalize the module loading code

Fixes #12738

integration tests for ansible modules core 2147

Fix links to dynamic inventory script example.

:doc`aws_example` no longer existed.

reordering entries in glossary for alphabetical order

Fixes #12742

Python 3: don't convert module arguments to bytes

This reverts commit 073f10a5 and instead
disables the failing test.

We're focusing on Python 3 support on the controller first; modules will
come later.

Fixes a test failure:

    ======================================================================
    ERROR: test_module_utils_basic_ansible_module_creation (units.module_utils.test_basic.TestModuleUtilsBasic)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "/home/mg/src/ansible/test/units/module_utils/test_basic.py", line 250, in test_module_utils_basic_ansible_module_creation
        supports_check_mode=True,
      File "/home/mg/src/ansible/lib/ansible/module_utils/basic.py", line 470, in __init__
        self._check_required_arguments()
      File "/home/mg/src/ansible/lib/ansible/module_utils/basic.py", line 1050, in _check_required_arguments
        self.fail_json(msg="missing required arguments: %s" % ",".join(missing))
      File "/home/mg/src/ansible/lib/ansible/module_utils/basic.py", line 1445, in fail_json
        sys.exit(1)
    SystemExit: 1
    -------------------- >> begin captured stdout << ---------------------
    {"msg": "missing required arguments: foo", "failed": true}

because converting 'foo' to bytes yields b'foo' on Python 3, which
doesn't match the native-unicode 'foo' argument spec.

Python 3: there's no basestring

added "include" for ansible_ssh_ change to another section

Fixes #12719

Ansible ssh changes docswork

Python 3: there's no iteritems()

Make ansible.vars.unsafe_proxy Python 3 friendly

Instead of str and unicode we have to deal with bytes and str.

Fixes ImportError: No module named '__builtin__' on Python 3.

AnsibleModules.log() fix for python3

Also add unittests for AnsibleModules.log()

Fixes #12586