Update .gitlab-ci.yml, fixed config file variable pointing to testing

.gitlab-ci.yml

@@ -34,7 +34,7 @@ deploy-master:
     - cp -R ./public/default ./built/public
     - cp -R ./routes/cert ./built/routes
     - cp -R ./views ./built
-    - cat $configfiledev > ./built/config/config.js
+    - cat $configfileprod > ./built/config/config.js
     - cat $cert > ./built/routes/cert/cert.pem
     - cat $certidp > ./built/routes/cert/cert_idp.pem
     - cat $key > ./built/routes/cert/key.pem