Description of problem:
In the "Create VM from IT" flow, in the "Select volume to boot from" list (first step of the form), we show a long list of volumes to boot from that includes historical volumes in addition to the newer ones.
We use preference labels to mark BV. In order to surface only the latest golden images and not any old images that were downloaded by a DS, we need to ask the BE to remove the preference labels, so they won’t show up anymore in the list. This filter should come from the BE.

Version-Release number of selected component (if applicable):{code:none}

How reproducible:

Steps to Reproduce:

1. Go to the Select volume to boot from list
2. Filter by RHEL for example
3. See the list contains multiple BV of the same type

Actual results:

Expected results:

Hide the historical volumes, to avoid users confusion and keep only the latest version. Maybe add an option to opt-in to show historical BV as well.

Additional info:

cc dkenigsb@redhat.com rsdeor