Comment 2 for bug 1775075

The original report did not highlight that this requires the P computes to be using a modified [cinder]catalog_info specifically looking for a cinderv2 type endpoint, as is default in TripleO:

https://github.com/openstack/tripleo-heat-templates/blob/351c320c191252c496f6911f972d31390469585b/puppet/services/nova-base.yaml#L226

You could argue that this is a config issue but IMHO the fact this is possible in P means we should continue to provide the type in the request context service catalog in Q, allowing any P computes to LM instances and eventually upgrade to Q where the default has now changed in TripleO:

https://github.com/openstack/tripleo-heat-templates/blob/3570a94a69e05af23cee11fbfaf3822538f75023/puppet/services/nova-base.yaml#L228