4.1.1 Delete ceilometr mongo tests

We do not support mongo as backend in 4.1.1
So tests check mongo role will always fail.
Delete tests for verification deployment of ceilometer
with mongo support and add tests for
ha deployment with ceilometer

Change-Id: I822c1329392dc42b764c6a442d676d785afaab00
Closes-Bug: #1325536
Merge "4.1.1 Delete ceilometr mongo tests" into stable/4.1