Fix naming in MQTT statefulset about devops

[blokovi]

I think that filename, as well as renaming VerneMQ container to mqtt-broker and MQTT adapter to mqtt-adapter is fine. The only remaining question is the statefulset. Maybe simply mainflux-mqtt?

I like this solution for statefulset mainflux-mqtt, (actually it would be {{ .Release.Name }}-mqtt). The simplest solution is always best.
Just note - name of deployments for other adapters are mainflux-adapter-coap mainflux-adapter-http so for the sake of consistency I would just reverse the order of the words in your proposal.

So:
mainflux-mqtt = mainflux-broker-mqtt + mainflux-adapter-mqtt

[manuio]

I agree for mainflux-mqtt = mainflux-broker-mqtt + mainflux-adapter-mqtt

[dborovcanin]

I think that filename, as well as renaming VerneMQ container to mqtt-broker and MQTT adapter to mqtt-adapter is fine. The only remaining question is the statefulset. Maybe simply mainflux-mqtt?