[Sudo rules][Settings][Who] Provide radio buttons functionality

[carma12]

The configuration of the 'Anyone' and 'Specified Users and Groups' radio buttons should be implemented to match the following behavior:

• When 'Anyone' radio is selected and 'Save' button is clicked, 'usercategory' parameter should change to "all" and all users and user groups should be removed from the lists.
• When 'Specified ...' radio button is selected, the 'usercategory' should be changed to empty string ("").
  • At this point, the user can either save the changes or add new users / groups and save afterwards.

This PR depend on this one to be merged: https://github.com/freeipa/freeipa-webui/pull/572

Signed-off-by: Carla Martinez [email protected]