This contains the fix for bug 1501435 so that legacy block device
mapping requests work in liberty (with openstackclient).
This the change log since 2.30.0:
3424bc6 Always send volume_id when booting with legacy bdm
0afb131 Update .gitreview for stable/liberty
Related-Bug: #1501435
Change-Id: I26a33dc4a6af9093937e475ce15571d233984ddb