Remove hpcloud from clouds.yaml listings, as our ansible-driven
automation fails on inaccessible provider endpoints:
ERROR! Inventory script (/etc/ansible/hosts/openstack) had an
execution error: Error fetching server list on
openstackci2-hpcloud:region-a.geo-1
Change-Id: I8bcc37ba9314d2f8343239ec7bb84d8e8574ce21