Add storage_mgmt network to DistributedComputeHCI role
Add storage_mgmt network to DistributedComputeHCI role

As the DistributedComputeHCI role contains Ceph, it also needs the
storage_mgmt network.

Change-Id: I7d587c333e98b0546f29bbd5c4f4906221658502

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates