Ensure non-root users can read arguments file when using sudo_user and non-standard modules

Non-standard modules must read in the arguments file in order to access their arguments, however, when this file is transfered to the remote host it may only have the permissions 600.  This means that using sudo and sudo_user will result in permission denied errors when attempting to read the arguments file.

This patch fixes #4438 by explicitly forcing the arguments file to be world readable before executing the module.

Fix TestInventory class by explicitly using /bin/bash

fixed name colision between warnings dict and module

Signed-off-by: Brian Coca <briancoca+ansible@gmail.com>

[doc] duplicate group in usa:children group

Fix building of docsite

* Fix paths in docsite/Makefile having an additional '..'.
* Ignore generated docsite/rst/modules/*.rst

If a specified key did not have a comment, it would be ignored as
an invalid key.

Fixes #4513

Add option remote_user to task level, to specify the ssh login user

Add "virtio" and "private_networking" options for DigitalOcean droplets

create install_options parameter for homebrew module

Adding os realpath filter.

This is particularly useful when wanting to get the absolute path of filepaths found by the 'fileglob' filter.
This also lets you provide absolute paths to roles, which search for files in different areas unless absolutely pathed.

Assume state='directory' if recurse is set and previous state was 'direc...

'easy_install' executable, modeled on '_get_pip'
from the 'pip' module to correctly handle all combinations of explicit
executable and virtualenv.

path explicit executable is passed to the task and to look for an explicit executable
by basename in a virtualenv if that is specified.

New module argument to specify the executable used for running 'pip'. This allows support for system installation of packages on systems with multiple installations of Python.

New module argument to specify the executable used for running 'easy_install'. This allows support for system installation of packages on systems with multiple installations of Python.

Changes examples from using Flask to some other package (Bottle was chosen) as per @mpdehaan's suggestion.

env-setup for fish users

added new module "ovirt"

initial draft acl module

Added full path to rhnreg_ks command for working correctly with sudo.