Horizon full_ha cannot connect to ceilometer-api

The Resource Usage tab in horizon currently displays a failure
connecting to the VIP for ceilometer-api when using the full_ha
scenario.

Set up the load balance for ceilometer-api to resolve.

Note that other changes are still needed for all components of
ceilometer to be HA.

Closes-Bug: #1270236
Merge pull request #11 from CiscoSystems/bugs/1270236

Horizon full_ha cannot connect to ceilometer-api