Backup_Stable_Working

Using static versions of docker containers. Latest Versions caused mismatch in functionality between Fiwrae Orion context broker and Apache Flink (scala class not found error). The Versions of the docker-compose.yml which worked are listed below (these will be used for the stable_working version.

mongo:
image: mongo:3.6

orion:
   image: fiware/orion:2.0.0
   
cygnus:
    image: fiware/cygnus-ngsi:1.9.0
          
idas:
   image: telefonicaiot/iotagent-ul:1.7.0
              
jobmanager:
    image: flink:1.6.1
      
taskmanager:
    image: flink:1.6.1