fixes to config/setting retrieval

- better variable precedence management
- universal plugin option handling
- also updated comments for future directions
- leverage fragments for plugins
- removed fact namespacing
- added 'firendly name' field
- updated missing descriptions
- removed some unused yaml entries, updated others to reflect possible future
- documented more plugins
- allow reading docs using alias
- short licenses
- corrected args for 'all plugins'
- fixed -a option for ansible-doc
- updated vars plugins to allow docs
- fixed 'gathering'
- only set options IF connection
- added path list and renamed pathspec mostly the diff is , vs : as separator
- readded removed config entries that were deprecated but had no message ... and deprecated again
- now deprecated entries give warning when set

lib/ansible/plugins/callback/log_plays.py

@@ -1,21 +1,21 @@
 # (C) 2012, Michael DeHaan, <michael.dehaan@gmail.com>
+# (c) 2017 Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
-# 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/>.
+'''
+DOCUMENTATION:
+    callback: log_plays
+    type: notification
+    short_description: write playbook output to log file
+    version_added: historical
+    description:
+      - This callback writes playbook output to a file per host in the `/var/log/ansible/hosts` directory
+      - "TODO: make this configurable"
+    requirements:
+     - Whitelist in configuration
+     - A writeable /var/log/ansible/hosts directory by the user executing Ansbile on the controller
+'''
 
-# Make coding more python3-ish
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type