Keep volume available if retype fails due to quota

If we're over quota for a volume type that we're retyping a volume to,
keep the volume available.

Closes-Bug: #1308819
Change-Id: I7e66e95bf12b7e5a6df04eeb5a501badb5f2941f
(cherry picked from commit 3305f9dd061e70736fc4b890a207ecd4d30c3544)