Updated openstack/openstack
Project: openstack/cinder  c24e82d046abb4e64f83cb7201d717b9cb403517
null
Fix exception log msg in attach volume method

Attach volume happened when volume's status is attaching or available, but
the exception msg only contain info about "available". So fix it.

Change-Id: I1caf83b94b3e4158eff88871a4187041a25e5d1c
Closes-Bug: #1270020