Replace AWX username and password with token

.gitlab-ci.yml

@@ -10,8 +10,7 @@ deploy:
     - >
       tower-cli job launch
       -h torn.tn.esss.lu.se
-      -u ${ANSIBLE_AWX_USERNAME}
-      -p ${ANSIBLE_AWX_PASSWORD}
+      -t ${TOWER_OAUTH_TOKEN}
       -J "deploy-cs-studio@lcr"
       --tags csstudio-ess-opis
       -e "csstudio_ess_opis_version=$CI_COMMIT_REF_NAME" --monitor