port --app syntax to dokku_client. closes #1638

dokku

@@ -113,7 +113,14 @@ execute_dokku_cmd() {
 
   if [[ "$(readlink -f "$PLUGIN_ENABLED_PATH/${PLUGIN_NAME%%:*}")" == *core-plugins* ]] ; then
     [[ ${argv[0]} == "$PLUGIN_CMD" ]] && shift 1
-    [[ ! -z $DOKKU_APP_NAME ]] && set -- "$DOKKU_APP_NAME" "$@"
+    if [[ ! -z $DOKKU_APP_NAME ]]; then
+      if [[ "$PLUGIN_CMD" == config* ]] && [[ ${argv[1]} == "--no-restart" ]]; then
+        shift 1
+        set -- "--no-restart" "$DOKKU_APP_NAME" "$@"
+      else
+        set -- "$DOKKU_APP_NAME" "$@"
+      fi
+    fi
     set -- "$PLUGIN_CMD" "$@"
   fi