update config file to Havana
specify auth_host and auth_port manually

ceilometer seems to ignore the auth_uri and fails back to the wrong
default auth_host

fixes bnc#856276
uncomment explicit definition of messaging service
Configure Lock path for Ceilometer

Otherwise API and Central collector might run into
locking issues.
Merge pull request #60 from MirantisDellCrowbar/havana-conf/hydrogen/master

update config file to Havana