Connections default to 'public' interface when attempting to run
openstack commands. This breaks setups where the network hosts are
separate from the controllers.
This change adds an ``openstack_interface`` variable to select the
correct endpoint to use, which defaults to ``internal``.
Co-Authored-By: Michael Senizaiz <michael@r-hpc.com>
Change-Id: Ifa766d2cc3ed7077f03c571398072ad5117701c6
Story: 2006814
Task: 37374
84d17b055e