Add version test for Ceilometer cli

In the other cli tests, there are version tests. But only Ceilometer cli
test doesn't have it.
This commit adds the test.

Change-Id: I9ef89ad4f47127abe4e305541625ce5d27a7ad75
port test_live_block_migration into nova v3 part2

this ports test_live_block_migration into nova v3 api.

Partially implements blueprint nova-v3-api-tests

Change-Id: I4952ad0836da674783409600f157799f63cdd1c6
Merge "Add version test for Ceilometer cli"