Updated openstack/openstack
Project: openstack/horizon  53a271119f3d551eefbc47f3c2d4229ee364b703

Fix AttributeError in VolumeSnapshot

This fixes a regression introduced in
Hiding "Launch as Instance" if volume is not bootable.

Change-Id: I9c45a1f5f4e3a096843ba6547dbf76387501f447
Closes-Bug: 1368732