Fix description of service in keystone catalog

It was mentioning Collector instead of Telemetry.
Remove trailing slashes from endpoints

See https://bugs.launchpad.net/python-ceilometerclient/+bug/1262498
Configure ceilometer compute agent for vsphere

When running on a nova node that is a proxy for vsphere, ceilometer
should not be configured for libvirt.
Merge pull request #135 from vuntz/endpoint-fixes

Small fixes for the catalog registration
Merge pull request #136 from vuntz/vmware-agent

Configure ceilometer compute agent for vsphere
Enable ceilometer alarming