Updated openstack/openstack
Project: openstack-dev/devstack  10f416136b8cd8e7c42c65f3cc97f75281719687
null
Expose enabled plugins for Sahara

Make devstack users able to specify enabled plugins. By default enable
vanilla, hdp and fake plugins. Fake plugin is needed for gate testing.

Change-Id: Ia557eafe19b7d8eb62b6511d8d5331a106ef4bc2