Updated openstack/openstack
Project: openstack/tempest  f756d3a5281dad98d5e22e459bfb5ff3f745822f
null
Move import to import block again

Since tempest.stress.driver doesn't use the admin manager in a static
variable anylonger we can move the import back to the block.

Change-Id: I4f720e4528f155f57ec0b3ce44e762d3290de55d