(RBAC enable)Fix when permission_type is not provided with API call
(RBAC enable)Fix when permission_type is not provided with API call

StackStorm/st2,Plexxi/st2,Plexxi/st2,tonybaloney/st2,tonybaloney/st2,nzlosh/st2,nzlosh/st2,StackStorm/st2,tonybaloney/st2,nzlosh/st2,nzlosh/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2