rabbitmq: Cluster default to false, not undefined
neutron.conf: Fix typo - verbove

#patch
test: Ring bell when done, add cleanup task

Ring the terminal bell when the stage of the test/run or test/setup
scripts are complete. This makes it easier to know when you are testing
and the process has completed in the background.

Split the cleanup task into its own task file and execution from within
the integration task file. This allows to easily inspect the state of
the stack when the integration test process fails and easily repeat.
test: Only ring bell when interactive bash shell
Merge pull request #503 from blueboxgroup/test-cleanup-bell

test: Ring bell when done, add cleanup task
Merge pull request #504 from blueboxgroup/rabbitmq-cluster-default

rabbitmq: Cluster default to false, not undefined
haproxy: Run as haproxy user, not nobody

Fix permissions on the TLS certificate and run the HAProxy service as
the haproxy user and group. This is a limited account created via the
haproxy package.

Explicitly define the PIDFILE to be used to override and default which
may change between the service script and haproxy.cfg.
arbiter: install percona-garbd package only
percona-arbiter: Fix on Trusty

- Split the percona-common tasks into separate precise and trusty yaml
files which are included based on the OS version.
- Add the version specific repo into the correct OS instead of the precise
repo on trusty.
- Leave the mysql-common package installed as python-mysqldb depends on
it which is needed by the Ansible MySQL modules.