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/junit.py

@@ -1,19 +1,44 @@
 # (c) 2016 Matt Clay <matt@mystile.com>
-#
-# 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/>.
+# (c) 2017 Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+'''
+DOCUMENTATION:
+    callback: junit
+    type: aggregate
+    short_description: write playbook output to a JUnit file.
+    version_added: historical
+    description:
+      - This callback writes playbook output to a JUnit formatted XML file.
+      - "Tasks show up in the report as follows:
+        'ok': pass
+        'failed' with 'EXPECTED FAILURE' in the task name: pass
+        'failed' due to an exception: error
+        'failed' for other reasons: failure
+        'skipped': skipped"
+    options:
+      output_dir:
+        name: JUnit output dir
+        default: ~/.ansible.log
+        description: Directory to write XML files to.
+        env:
+          - name: JUNIT_OUTPUT_DIR
+      task_class:
+        name: JUnit Task class
+        default: False
+        description: Configure the output to be one class per yaml file
+        env:
+          - name: JUNIT_TASK_CLASS
+      fail_on_change:
+        name: JUnit fail on change
+        default: False
+        description: Consider any tasks reporting "changed" as a junit test failure
+        env:
+          - name: JUNIT_FAIL_ON_CHANGE
+    requirements:
+      - whitelist in configuration
+      - junit_xml (python lib)
+'''
 
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type