Ensure Manila shares are created on the same backend host

This update ensures that Manila shares are consistently created
on the same backend host. This change addresses cases where CephX
user IDs are reused within a Ceph cluster across different OpenStack
projects, ensuring that access conflicts are accurately tested.

Change-Id: Ied7d75fc3e26c1963744df6e9e5af6ae0e605158
1 file changed