Updated openstack/openstack
Project: openstack/ceilometer  c3696451d45f9412dc60c03e9e7ad31f27727c42

test db2 driver code

currently, db2 driver code is not being tested. the scenario tests
are essentially calling the mongodb driver code twice.

Change-Id: I4987bb974e4f8ad6584e7939c14e59f243562fef
Closes-Bug: #1371396