Handle the CM service availability in tempest

This patch handle the ceilometer service availability in tempest.

Change-Id: Ib0d1d7b858ff327785ebbcc27d7f920fb4a32444
Removed dependency from dotcloud repos for the Nova docker driver

Since the Nova driver is in Nova core from the Havana release, this
will just clean the docker nova driver install.

Change-Id: Ic98012b8b5e54e727a1b11f4d32f6623d2067621
Merge "Handle the CM service availability in tempest"
Merge "Removed dependency from dotcloud repos for the Nova docker driver"