This change adds a tag to all of the common tasks which may be useful
in situations where only these common tasks may need to be rerun.
Example scenario:
RabbitMQ has failed and was re-built, in order to recreate the
rabbitmq vhosts the user can now use the "common-rabbitmq" tag
to recovery the cluster.
Change-Id: I973d2f5269e911256825249f86dc2985790e6880
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
d7c57113b1