Updated openstack/openstack
Project: openstack/ceilometer  8b8b8f2a8e7fae8b97a2e1d3b7aa370e7bc21ee9

update default_log_levels set by ceilometer

the current log levels are pretty old. update the current list to
extend current default default_log_level defined in oslo-incubator
and adding in stevedore and keystoneclient levels

Change-Id: I239645ef641613a994a48f20c0238e76dc9660f2
Partial-Bug: #1294789