Fixes #7917 - api for operating systems now uses field 'title'
Merge pull request #155 from tstrachota/os_title

Fixes #7917 - api for operating systems now uses field 'title'
Fixes #7913 - listing filters for roles always fail with an exception

Listing filters for roles fails with "Missing options to search filter". ListCommand#request_param always tries to resolve name of the command's resource to id. This is not desirable in case of listing roles.
Merge pull request #154 from tstrachota/filters

Fixes #7913 - listing filters for roles always fail with an exception