Adding support for installing patches in Zypper module
Adding list_downloaded function to Zypper module
Adding list_downloaded function to Yum module
Adding new pkg.downloaded state
Adding documentation for pkg.downloaded state
Adding pkg.patched and pkg.patch_downloaded states
Check targets for advisory patches installation
Adds support for listing advisory patches with Zypper
Adds support for listing advisory patches with Yum
Improving function naming
Moving advisory ids checks into pkg_resource.parse_targets
Fixes _find_download_targets to call _preflight_check
Fixes parse_targets when advisory id is passed as name
Pylint fixes
Enables pkg.downloaded to verify packages after package manager call.
Adding missing kwargs parameters to pkg.install call
Adding versionadded flags
Some refactoring and minor fixes
Adding unit tests for Zypper execution module
Adding more unit tests for Zypper module
Pylint fix
