Fix restarting app when config has an "app" object intead of "meteor"

Author: zodern

CHANGELOG.md

@@ -39,6 +39,7 @@ The `mup status` command gives an overview of what is running on the servers and
 - Some of Mup's dependencies use Buffer.alloc. When the version of node used to run mup is missing the function, mup will show a message explaining the problem and exit
 - Added 10 second timeout to the curl command in the Deployment Verifier
 - Fix retry logic for the copy file task
+- Fix `mup restart` and `mup meteor restart` when config has an `app` object instead of `meteor`
 - Fix running Prepare Bundle when image already has a `/built_app` folder
 - Fix alignment of list of servers when running `mup ssh` without specifying a server
 - Fix showing stack trace of errors with old versions of Node

src/plugins/meteor/command-handlers.js

@@ -367,7 +367,7 @@ export function stop(api) {
 
 export function restart(api) {
   const list = nodemiral.taskList('Restart Meteor');
-  const sessions = api.getSessions(['meteor']);
+  const sessions = api.getSessions(['app']);
   const config = api.getConfig().app;
 
   list.executeScript('Stop Meteor', {