Updated openstack/openstack
Project: openstack/nova  6527f6b090498e507c637edb291a9604fa403cfa

Add more input validation of bdm param in server creation

Adds a check to ensure that block_device_mapping is a list and
return 400 Bad Request rather than 500 as currently happens.

Change-Id: I30551bcbb7d658734da158dbb8dd7d825c526896
Closes-Bug: 1379973