Changed the regular expression which is matching the service name
Added CPU percentage usage metrics and iostat metrics
Revert "Changed the regular expression which is matching the service name"
Added plugin which is checking AMQP connections

Some people don't use HTTP API of Rabbit or have that TCP port closed
so can't use it. This check is for clean AMQP connection however
depends on Bunny gem which is a pain. This was tested with the
following Bunny gem version: 0.9.0.pre9 which is basically
latest Bunny version at the time of creation of this plugin
Removing help logging.
Merge pull request #187 from milosgajdos83/master

RabbitMQ AMQP check, CPU and iostat metrics