bugfix: selecting FS to handle createMessage api

lib/routes/api/accounts.js

@@ -642,7 +642,9 @@ router.post('/:sid/Messages', async(req, res) => {
       logger.info('No available feature servers to handle createMessage API request');
       return res.json({msg: 'no available feature servers at this time'}).status(500);
     }
-    const ip = fs[idx++ % fs.length];
+    let ip = fs[idx++ % fs.length];
+    const arr = /^(.*):\d+$/.exec(ip);
+    if (arr) ip = arr[1];
     logger.info({fs}, `feature servers available for createMessage API request, selecting ${ip}`);
     const serviceUrl = `http://${ip}:3000/v1/createMessage/${account_sid}`;
     await validateCreateMessage(logger, account_sid, req);