* Fix for type error
The empty type here should be a dict, not a list as is has a `get` done
on it next.
* Return dict directly to avoid failing key lookup
* Replace InventoryFileCacheModule with a better developer-interface
Use new interface for inventory plugins with backwards compatibility
Auto-update the backing cache-plugin if the cache has changed after parsing the inventory plugin
* Update CacheModules to use the config system and add a deprecation warning if they are being imported directly rather than using cache_loader
* Fix foreman inventory caching
* Add tests
* Add integration test to check that fact caching works normally with cache plugins using ansible.constants and inventory caching provides a helpful error for non-compatible cache plugins
* Add some developer documentation for inventory and cache plugins
* Add user documentation for inventory caching
* Add deprecation docs
* Apply suggestions from docs review
* Add changelog
* make add_group return proper name
* ensure central transform/check
* added 'silent' option to avoid spamming current users
those already using the plugins were used to the transformations, so no need to alert them
* centralized valid var names
* dont display dupes
* comment on regex
* added regex tests
ini and script will now warn about deprecation
* more complete errormsg
* complete plugin docs
* add missing 'plugin' option
* user and password are now 'correctly' required
* added inventory source example and extension information for user
updated with newer methods
fixed ssl name to match ansible convention
more options for host info
added vars_prefix
added comments explaining current flow
reformated commentd out code so pep8 can be happy
enabled caching
