Updated openstack/openstack
Project: openstack-dev/devstack  ddf656fdb631e575c71c30dccd2ba0ec6a10d974
null
removed unecessary lines for docker install

* script was trying to copy file from a source
	that doesn't exist to destination that does.
* variable DOCKER_BRANCH no longer used.

Change-Id: I50fd55e97dfc4eaaa3c1f2bfc42e8cfc0e76cdf4