Undefined names found by pyflakes in plugins/inventory/

Add a requires on python-six 1.4.0 ( for add_metaclass )

Fix C.ANSIBLE_SSH_CONTROL_PATH string interpolation

Since C.ANSIBLE_SSH_CONTROL_PATH use the old format
( "%{directory}" ), we need to use the % operator
and not the format method, at least for python 2.

Port some changes that occured on v1 get_facts modules to v2

This also mean that this doesn't run on RHEL 7 as of today.

Correct the ternary example. Fixes #10763

- 5c64956a Set distribution, release, and version for NetBSD
- ec01e071 adjusted for the possibility of lsblk not existing
  for fact gathering
- d4eddabb Patch for bug #10485 - ansible_distribution fact
  populates as 'RedHat' on Oracle Linux systems
- 7813ffd7 Adding uptime_seconds fact for linux and darwin platforms
- 29cca019 Adding oVirt recognition for oVirt guests.
- d0197195 Handle /etc/os-release files with 'Raspbian' in them
- 58a5f8df Pulls machine id in ansible facts
- 1968f996 Wrong OS_FAMILY declaration for openSUSE
- 5dec45e2 Fix wrong distribution facts on SLES/openSUSE

and a few others

[Docs] Make shell quoting rules explanation a bit clearer

I personally got confused by the use of 'vs' in the explanation.
Maybe this explains it better?

Fixes #10758

Set distribution, release, and version for NetBSD.

adjusted for the posibolity of lsblk not existing for fact gathering

Remove check of hardcoded AWS region list.

Add CoreOS facts detection, fix https://github.com/ansible/ansible-modul...

made certain flags part of base to make them universally settable

Fixed a few typos in the become documentation

Make some of the optional requirements optional for testing -- we'll skip the tests instead

You can extend boto to point at other regions that are defined in a
private cloud by defining ``BOTO_ENDPOINTS`` or ``endpoints_path`` in
the ``~/.boto`` file.

Ansible was doing a premature check against a hard-coded list of regions
that interrupted this possibility.  This commit removes that and
clarifies what the user can do if they specify a non-AWS region.

Prefer dnf to yum.

On Fedora 22 and later, yum is deprecated and dnf is installed by
default. However, the detection do not seems to take this in account,
and always use yum, even when yum cli is just a wrapper to tell "use
dnf", as this is the case on F22 and later ( see package dnf-yum ).

As dnf is not installed by default, except on F22, this shouldn't
break anything.

Vagrant inventory: exit 0 on success

Use abc for BaseCacheModule