Comment 5 for bug 1628952

Role gate scenario is in place but failing as the ceilometer_api is not starting. The api is not starting because the DbHooks class is attempting to get a connection to MongoDB when no mongo install has been done or is in fact required.

Based on feedback from Gordon Chung in #openstack-telemetry - http://eavesdrop.openstack.org/irclogs/%23openstack-telemetry/%23openstack-telemetry.2016-10-04.log.html#t2016-10-04T20:08:57 it sounds like the scenario gate and the role needs further work.

Further work will be:
 * Modify the role to not install Apache or the ceilometer-api upstart/systemd service when Gnocchi is enabled for storage
 * Modify the functional test to not attempt to reach the ceilometer-api when Gnocchi is enabled for storage.