Update manifests/repo/rhel.pp
Update manifests/repo/rhel.pp

Avoids that RPM GPG-Key import is executed at every Puppet run.

Rabbitmq::Repo::Rhel/Exec[rpm --import http://www.rabbitmq.com/rabbitmq-signing-key-public.asc]/returns: executed successfully
cegeka/puppet-rabbitmq,cegeka/puppet-rabbitmq