Fixes #12245

Potential fix for #12260

Potential fix for amazon linux's rpm doing something strange with the python_sitelib macro #12166

Fix rsync connections to IPv6 addresses

Similar to https://github.com/ansible/ansible/pull/11816 we can unconditionally
wrap the host address in square brackets. This is required by rsync for IPv6
addresses.

Required some rewiring in inventory code to make sure we're using
the DataLoader class for some data file operations, which makes mocking
them much easier.

Also identified two corner cases not currently handled by the code, related
to inventory variable sources and which one "wins". Also noticed we weren't
properly merging variables from multiple group/host_var file locations
(inventory directory vs. playbook directory locations) so fixed as well.

Fixes #12191

Use parse_kv to correctly parse parameters from password lookup

Fixes https://github.com/ansible/ansible-modules-core/issues/1968

Become clean

simplify become testing and handling, we had drifted and were doulbe checking prompt, become and become_pass
fixed tests to conform to new signature and now tests both with and w/o password
now we are more explicit about self.prompt

remove closing connections after every task, this goes against conneciton caching and was not expected behaviuor nor inhertited from v1

remove closing connections after every task, this goes against conneciton caching and was not expected behaviuor nor inhertited from v1

Python 3: use six.text_type instead of unicode

Fixes the bug I introduced in my previous commit (six.string_types is
(basestring,) on Python 2).  Thanks @abadger for noticing!

Replace 'unicode' with six.text_type, everywhere but in module_utils.

Go back to using ~/.ansible/cp as the ControlPath

Fixes #12198
Fixes #12241

later

This was commented out earlier because of the lack of interprocess
locking and prepare_writeable_dir in v2.

The locking was not needed: it could only protect against other siblings
of this process (since they were all locking a temporary file that was
opened in the parent), and those would be running as the same user and
with the same umask. Also, os.makedirs() tolerates intermediate paths
being created by other processes. For any other kind of error, both
locking and non-locking code paths would fail in the same way.

So all we really need to do is make sure we have write permissions.

(We also move the cp_dir handling code to where we actually set the
ControlPath ourselves; if the user has set it via ssh_*args already,
we don't need to bother.)

Fixes #12213

Enable the var precedence test in travis

Update developing_modules.rst

commit 9921bb9d2002e136c030ff337c14f8b7eab0fc72
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Mon Aug 10 20:19:44 2015 +0530

    Document --ssh-extra-args command-line option

commit 8b25595e7b1cc3658803d0821fbf498c18ee608a
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Thu Aug 13 13:24:57 2015 +0530

    Don't disable GSSAPI/Pubkey authentication when using --ask-pass

    This commit is based on a bug report and PR by kolbyjack (#6846) which
    was subsequently closed and rebased as #11690. The original problem was:

        «The password on the delegated host is different from the one I
        provided on the command line, so it had to use the pubkey, and the
        main host doesn't have a pubkey on it yet, so it had to use the
        password.»

    (This commit is revised and included here because #11690 would conflict
    with the changes in #11908 otherwise.)

    Closes #11690

commit 119d0323892c65e8169ae57e42bbe8e3517551a3
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Thu Aug 13 11:16:42 2015 +0530

    Be more explicit about why SSH arguments are added

    This adds vvvvv log messages that spell out in detail where each SSH
    command-line argument is obtained from.

    Unfortunately, we can't be sure if, say, self._play_context.remote_user
    is obtained from ANSIBLE_REMOTE_USER in the environment, remote_user in
    ansible.cfg, -u on the command line, or an ansible_ssh_user setting in
    the inventory or on a task or play. In some cases, e.g. timeout, we
    can't even be sure if it was set by the user or just a default.

    Nevertheless, on the theory that at five v's you can use all the hints
    available, I've mentioned the possible sources in the log messages.

    Note that this caveat applies only to the arguments that ssh.py adds by
    itself. In the case of ssh_args and ssh_extra_args, we know where they
    are from, and say so, though we can't say WHERE in the inventory they
    may be set (e.g. in host_vars or group_vars etc.).

commit b605c285baf505f75f0b7d73cb76b00d4723d02e
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Tue Aug 11 15:19:43 2015 +0530

    Add a FAQ entry about ansible_ssh_extra_args

commit 49f8edd035cd28dd1cf8945f44ec3d55212910bd
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Mon Aug 10 20:48:50 2015 +0530

    Allow ansible_ssh_args to be set as an inventory variable

    Before this change, ssh_args could be set only in the [ssh_connection]
    section of ansible.cfg, and was applied to all hosts. Now it's possible
    to set ansible_ssh_args as an inventory variable (directly, or through
    group_vars or host_vars) to selectively override the global setting.

    Note that the default ControlPath settings are applied only if ssh_args
    is not set, and this is true of ansible_ssh_args as well. So if you want
    to override ssh_args but continue to set ControlPath, you'll need to
    repeat the appropriate options when setting ansible_ssh_args.

    (If you only need to add options to the default ssh_args, you may be
    able to use the ansible_ssh_extra_args inventory variable instead.)

commit 37c1a5b6794cee29a7809ad056a86365a2c0f886
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Mon Aug 10 19:42:30 2015 +0530

    Allow overriding ansible_ssh_extra_args on the command-line

    This patch makes it possible to do:

        ansible somehost -m setup \
            --ssh-extra-args '-o ProxyCommand="ssh -W %h:%p -q user@bouncer.example.com"'

    This overrides the inventory setting, if any, of ansible_ssh_extra_args.

    Based on a patch originally by @Richard2ndQuadrant.

commit b023ace8a8a7ce6800e29129a27ebe8bf6bd38e0
Author: Abhijit Menon-Sen <ams@2ndQuadrant.com>
Date:   Mon Aug 10 19:06:19 2015 +0530

    Add an ansible_ssh_extra_args inventory variable

    This can be used to configure a per-host or per-group ProxyCommand to
    connect to hosts through a jumphost, e.g.:

        inventory:
            [gatewayed]
            foo ansible_ssh_host=192.0.2.1

        group_vars/gatewayed.yml:
            ansible_ssh_extra_args: '-o ProxyCommand="ssh -W %h:%p -q bounceuser@gateway.example.com"'

    Note that this variable is used in addition to any ssh_args configured
    in the [ssh_connection] section of ansible.cfg (so you don't need to
    repeat the ControlPath settings in ansible_ssh_extra_args).

Fix typo to avoid traceback during testing

* When iterating over a child state, a failure should be propagated
  up so parent blocks don't continue iterating
* Make sure a child state exists before trying to search it

Fixes #12210

Python 3: avoid iteritems() in a template

I don't think six.iteritems is available here, but I also don't expect
there to be enough platforms to ever make the speed difference between
.items() and .iteritems() noticeable.