FBR : resultsdb fedora-messaging configuration

[Clement Verna]

Hi all,

Currently resultsdb in production is not configured properly to send
messages using fedora-messaging which in turns causes greenwave to not
send messages (greenwaves publishes messages when it receives new
results).

The attached patch makes sure that we create the fedora-messaging in
production and not only in staging.

This should be fixing https://pagure.io/fedora-infrastructure/issue/7735

+1s ?