Updated openstack/openstack
Project: openstack/sahara  8f2f606bd61aaa06ed040a8f74c1c2f555d93f36

Added checks on deleting cluster

Checks if cluster is going to be deleted can prevent race condition
problems.

Change-Id: I85e8bcd2d61ff60ba7eadce1242b0489e354889d
Closes-Bug: #1392490