Designate/Blueprints/ContinuousIntegrationWithDevStack

Summary
A DevStack plugin for Designate is available and running outside of the official CI infrastructure. We would like to move it in to the official build jobs to reduce external dependencies.

Configuration Changes
Additional jobs will be defined in the openstack-infra/config repository. Jobs are configured at modules/openstack_project/files/jenkins_job_builder/config/ within that repository.

Jobs will be configured to test the following back end databases:


 * mysql
 * postgresql