Updated openstack/openstack
Project: openstack/trove  e7e3be73a737916a7aefb7947063116e638753ab

Fix prepare call for redis guest agent

Changes:
- The mount point ownership now changed to redis user and group
- Redis restarted to use new config elements

Change-Id: I972cd0c7f6baaed8d8c2a61d096f39a283685237
Closes-Bug: #1298536