Deprecate monasca-ceilometer
Deprecate monasca-ceilometer

This is step 2c of the deprecation process as described in [1].

https: //docs.openstack.org/project-team-guide/repository.html#step-2c-remove-noop-jobs
Change-Id: Ic03334754d4c10abf640f1364a49edd403821c7f

openstack-infra/project-config,openstack-infra/project-config