Skip both tenant and management networks when generating certs
Skip both tenant and management networks when generating certs

Without this change we were unable to deploy TLS Everywhere with
management network. This is because the service principal is not
created due to VIP being set to false in network_data.yaml

Closes-Bug: #1861097
Resolves: rhbz#1777605
Change-Id: I43fd5f67c1a0be6eaa1752575349e64329cada4a

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