reverseproxy: rebuild only when needed

re-creating nginx configs is only needed in 3 cases:
* provider changes. we create a rebuild file for this
* nginx config is somehow corrupt by external changes. user can click ui button

on startup, dashboard also always creates the nginx configs. so it's always up to provide the button

src/cloudron.js

@@ -287,10 +287,11 @@ async function updateDashboardDomain(domain, auditSource) {
     safe(services.rebuildService('turn', auditSource), { debug }); // to update the realm variable
 }
 
-async function renewCerts(auditSource) {
+async function renewCerts(options, auditSource) {
+    assert.strictEqual(typeof options, 'object');
     assert.strictEqual(typeof auditSource, 'object');
 
-    const taskId = await tasks.add(tasks.TASK_CHECK_CERTS, [ auditSource ]);
+    const taskId = await tasks.add(tasks.TASK_CHECK_CERTS, [ options, auditSource ]);
     tasks.startTask(taskId, {});
     return taskId;
 }