Add requirements check job.

Initially non-voting, and only runs when requirements files
of openstack/ projects are updated.

Change-Id: I7aa06fb7bda6d2c08cf402167db800827ac24f81
Reviewed-on: https://review.openstack.org/25447
Reviewed-by: Anita Kuno <akuno@lavabit.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Trigger mirror updates when requirements change.

Change-Id: Ief0986c61af9b242fb5c4987acca9904fcf9dbeb
Reviewed-on: https://review.openstack.org/25538
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Savanna project conf update - client added and acl fixed

Change-Id: I9e1b1ed5a0421ea83dfd9eda289bc3bb55870879
Reviewed-on: https://review.openstack.org/25331
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins