Updated openstack/openstack
Project: openstack/heat  b7d624e84ca168933cde6c73ef09e14e72e4fb3d

Fix docker volumes binds issue

Without the fix, the volumes will not be attached after the container
started.

Closes-Bug: #1322205

Change-Id: Ie8eff402e8714f3c5d478dbc9fc02b43a377dccd