Error on trying to double-add nodes or groups
Error on trying to double-add nodes or groups

Prevent user from repeatedly adding the
same group to a node or same node to a group.

jjohnson42/confluent,xcat2/confluent,xcat2/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent