Fix find volume for migrate command

Recently _find_volume was removed, but not fixed for migrate.

Change-Id: I72b1b169bc67f89de10b7e729fc461b9114d3789
Closes-Bug: #1231117
Synch up with OSLO-Incubator

Wanted to get updates before next push to pypi.

The main thing driving this is we're now calling in
some methods from strutils and gettextutils that don't
have the py33 updates.

Change-Id: I358f08f5c5c0a9ee6729947a8f01b1e96de0a729
Merge "Fix find volume for migrate command"
Merge "Synch up with OSLO-Incubator"