fixes #11945

cloudstack: refactor get_result()

Fixes #11895

* A commen dict of keys has been defined, which we look in results returned from the API.
* self.returns dict can be use in subclass to extend this dict.
* Optionally the key name can be replaced with a new key name, often used to make the return keys identical to the arguments passed.
* Use new style class

Fixes #11893

Since we explicitly set convert_bare=False in the template lookup
code, but still want individual looks that call listify directly to
convert bare variables if needed.

Fixes #11881

bugfix: missing path for lvm facts

FIXME in host range parsing

Document any_errors_fatal and max_fail_percentage

Add LVM facts to setup module

This allows us to properly catch the 'is defined' and 'is undefined'
checks and return the correct boolean result.

Fixes #11892

fixes remote code execution for su/sudo with strict remote umasks

Fixes #11877

fix docsite ad placement on safari

Fixes #11863
Fixes #11878

update docsite ads

cloudstack: add get_result() in utils to return common results

Update playbooks_tags.rst

#9433 rebase: Cache the results for the RackSpace dynamic inventory

A future branch might make it configurable.

Also, use old school string interpolation so that the plugin is compatible with
Python < 2.7.