Ticket 48005 - CI test: added test cases for ticket 48005
    
    Description: Adding testcases for tasks:
        syntaxes/validate_task.c:      "syntax validate"
    	automember/automember.c:       "automember rebuild membership"
    	automember/automember.c:       "automember export updates"
    	automember/automember.c:       "automember map updates"
    	memberof/memberof.c:           "memberof task"
    	schema_reload/schema_reload.c: "schema reload task"
    	usn/usn_cleanup.c:             "USN tombstone cleanup task"
    
    Reviewed by mreynolds@redhat.com (Thank you, Mark!!)
    
    (cherry picked from commit 1557df544b54015746088a1271bfe45cad043964)