Updated openstack/openstack
Project: openstack/ceilometer  4fc82d477b3c1deb1ea2d1330dc325940975d0b0

skip polls if service is not registered

currently, when any pollster runs against a service that is not
registered in Keystone, it will throw an exception. we should
catch and skip these polls

Change-Id: I2b582b22a44182ab31d44ce459cc6d642cc3719d
Closes-Bug: #1337293