Updated openstack/openstack
Project: openstack-infra/devstack-gate  78a1d77e8b722c25a7b78daf46f81c267b3f02d9
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trove is an integrated project add it by default

trove is an integrated project, and has tempest tests now, we
should add it as a default project that runs in the gate.

Change-Id: I9071cffa47518ab993330fb5e7ad3d086b2e27b2