TMSS-310: Add rabbitmq service so TMSS can connect to a broker

SAS/TMSS/docker-compose-ua.yml

 # This docker-compose is used to run TMSS together with a test open ID connect server on the User Acceptance system (tmss-ua)
 version: "3"
 services:
+  rabbitmq:
+    image: rabbitmq:latest
+    hostname: rabbitmq
+    ports:
+      - 5672:5672
+      - 15672:15672
   web:
     image: nexus.cep4.control.lofar:18080/tmss_django:latest
     restart: on-failure