Update roles for rsyslog and add the submodule for openstack_logging

* remove priv sep in rsyslog roles
* add openstack_logging to the roles
* enable rsyslog-server on ha-controller1
* enable rsyslog-client on ha-controller2 and single-compute
update openstack-logging submodule and roles
Merge branch 'grizzly' into US335
move rsyslog from rcbops to upstream syslog
make single-controller a rsyslog-server instead of a client
Merge remote-tracking branch 'origin/grizzly' into US335
Merge pull request #409 from rackerjoe/US335

Update roles for rsyslog