Port v2 to use the C version of pyyaml instead of pure python

Conflicts:
	v2/ansible/playbook/helpers.py

Clean non-printable chars from stdout instead of dropping the whole thin...

* Elminates a lot of logic in the AnsibleComposer class.
* Update tests with new column offsets.  The rule should now be
  consistently: Column is the start of the entry's value (so for
  strings, the first non-space after the entry beginning, for dicts, the
  first character of the first key)

Change AnsibleConstructor for yaml to only return unicode strings

* Changes AnsibleConstructor so that only unicode strings are returned
  (no str type)
* Tracks line, column numbers for strings
* Adds unittests for AnsibleLoader (generic for all the yaml parsing)

Remove auth token and port openstack module_utils changes to v2 tree

note added to source section

Fix patch action plugin

Added reminder to not use source install method if you're going to be installing ansible for a Tower system

The rest of ansible uses validate_certs, so make that the main
documented parameter. However, leave verify as an alias since that's the
passthrough value to the underlying libraries.

Possible fix for the first newline and triple newline problems

* Do backslash escape parsing in parse_kv() [was being done in the copy
  module purely for newlines in the copy module's content param before]
* Make parse_kv always return unicode
* Add bandaid to transform args to unicode until we can fix things
  calling parse_kv to always send it unicode.
* Make split_args deal with unicode internally.  Warning, no bandaid for
  things calling split_args without giving it unicode (shouldn't matter
  as dealt with str internally before)
* Fix copy and unarchive action plugins to not use setdefaultencoding
* Remove escaping from copy (it was broken and made content into latin-1
  sometimes). escaping is now in parse_kv.
* Expect that content is now a unicode string so transform to bytes just
  before writing to the file.
* Add initial unittests for split_args and parse_kv.  4 failing
  tests.because split_args is injecting extra newlines.

cloudstack: common code used in cloudstack modules

small updates to community and contribution page