change tests to use SLES11SP3 instead of openSUSE 12.3

Change-Id: Ifc6d12da53812ffa33fa35cbb7112e8b356945a3
Enable ceilometer on RHEL

There were no attribute definitions for installing the ceilometer
packages and services on RHEL. This patch adds them.

Change-Id: Iccfa609f418cb160a317abf20b83180b4556e50e
Closes-Bug: #1277725
Merge "change tests to use SLES11SP3 instead of openSUSE 12.3"
add default 'service_user' attribute

Change-Id: I9fa452b441342883a163c26bdf3e322858228b2f
Merge "Enable ceilometer on RHEL"
Merge "add default 'service_user' attribute"
Fix metering service endpoint path spec

After installing ceilometer with the metering cookbook, invoking the
ceilometer CLI fails because the API base URL used is
http://127.0.0.1:8777/v1/v2 which means that the base endpoint path of
/v1 is incorrect and it should be simply /.

The openstack-common cookbook was updated to set the right path but we
need to update the test cases, and point to the new version of the
common cookbook.

Change-Id: I203a5a6346a3765bb249149a209122ec3d33601d
Partial-Bug: #1277742
Merge "Fix metering service endpoint path spec"