Add query for cinder volume delete hang bug 1396186

There are no errors in the cinder logs or syslog so
this isn't exactly the same failure as bug 1373513.

Until we can get better logging in the cinder logs
we're left with the timeout in the tempest console
log.

94 hits in 7 days, check and gate, all failures.

Change-Id: Ib54b7dd9f0b111a70be334a2357effc4bc632fea
Related-Bug: #1396186