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os-brick code was pulled out of cinder and made into its own library https://review.openstack.org/#/c/155552/ added to requirements: https://review.openstack.org/#/c/177372/ Integration tests were added https://review.openstack.org/#/c/188156/ But they still use the version of os-brick from pip. This change updates devstack to pull in the changes from os-brick patch sets instead, when configured to do so. Needed-by: Id2bc10782847861fe4bb5e9e46245654450e38fd Change-Id: I5359dd37dfe94bd469d5ca35f9fbaeda61b5fac4