Adds initial ceilometerclient testing code

This patch add the initial ceilometerclient testing code:

* meter-list
* resource-list
* alarm-list

Change-Id: I8b3f8b93be7a4ddab8011318b12f3d0910e69d87
Implements: bp add-basic-ceilometer-tests
Merge "Adds initial ceilometerclient testing code"