Manila: add support of endpoint_type for clients
Manila: add support of endpoint_type for clients

Add additional options called 'endpoint_type' for each of config groups
related to nova, cinder and neutron clients.

Change-Id: I24dc11502b148fbe564dc63c6f78b7dcbfe44f01

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible