Use "nova_api" as the backend name

And similarly for nova-metadata-api and nova-novncproxy-websocket.

"nova_api" is used instead of "nova-api" as the backend name in the haproxy
configuration. Ideally, we should not rely on names defined in the user
configuration, but we have no solution for this right now.

Change-Id: Id4d6fb6788fedeb9cc15eddfe59a0ad4ddc32699
1 file changed