user: add object plugin for user_status

Change user_status from a method of user to a method of a new userstatus
class, which defines the extra attributes returned by user_status.

This fixes user_status CLI output.

https://fedorahosted.org/freeipa/ticket/4739

Reviewed-By: David Kupka <dkupka@redhat.com>

ipaserver/plugins/baseuser.py

@@ -61,24 +61,6 @@ baseuser_output_params = (
     ),
    )
 
-status_baseuser_output_params = (
-    Str('server',
-        label=_('Server'),
-    ),
-    Str('krbloginfailedcount',
-        label=_('Failed logins'),
-    ),
-    Str('krblastsuccessfulauth',
-        label=_('Last successful authentication'),
-    ),
-    Str('krblastfailedauth',
-        label=_('Last failed authentication'),
-    ),
-    Str('now',
-        label=_('Time now'),
-    ),
-   )
-
 UPG_DEFINITION_DN = DN(('cn', 'UPG Definition'),
                        ('cn', 'Definitions'),
                        ('cn', 'Managed Entries'),