Fix cleanup job

.gitlab-ci.yml

@@ -80,7 +80,7 @@ stop_testing:
     - deploy
   script:
     - *nomad_deps
-    - export JOB_PREFIX="${DEV_JOB_PREFIX}"
+    - JOB_PREFIX="`source dev.variables.sh && echo $JOB_PREFIX`"
     - for j in *.nomad; do JOB=`grep task <(envsubst < $j) | sed 's/.*"\([^"]*\)".*/\1/'`; echo -e "\nDeleting job ${JOB}:"; nomad job stop -verbose ${JOB} || true; done
   only:
     - tags