devstack: do not wait for service to start
devstack: do not wait for service to start

There's no reason to wait for ceilometer-api to start, as everything
should be resilient anyway.

(and currently that breaks the gate)

Change-Id: I3c381a43bb7ddc5f873d60bb13e27bc029ccca10

openstack/ceilometer,ityaptin/ceilometer,openstack/ceilometer,ityaptin/ceilometer