Remove the use of role in the ansible dci_user module
Remove the use of role in the ansible dci_user module

Since the Control-Server now relies on the use of role_id to identifies
roles, we can drop the use of role in the client code.

Change-Id: I9acd25b615a65810dc5fcefeb6b3ec3279261667

redhat-cip/dci-ansible,redhat-cip/dci-ansible