Comment 2 for bug 1192745

Reviewed: https://review.openstack.org/33735
Committed: http://github.com/openstack/cinder/commit/48389857d15c5cda860fa8f9914d62b148bfd17a
Submitter: Jenkins
Branch: master

commit 48389857d15c5cda860fa8f9914d62b148bfd17a
Author: John Griffith <email address hidden>
Date: Wed Jun 19 17:33:59 2013 -0600

    Modify check for volume-type-id to a get w/default

    While implementing Fix for a previous bug to enable setting
    volume type on a cloned volume and reading it's info we added
    a vref['volume_type_id'], problem is that the _do_clone method
    is shared for both clone and create from snapshot.

    In the create from snapshot case however that key doesn't exist
    in the vref (which is a snapshot object).

    This change turns this into a key.get with a default return.

    Fixes bug: 1192745

    Change-Id: I1a6d38de614f54fcaa31ea7cc4250aacc85b0796