Merge branch 'monitoring-urls-in-slack' into 'develop'

Configure production grid monitoring to also use new 2nd level domain

See merge request !324

morph/grid/production/config.json

@@ -9,8 +9,8 @@
   , "payments.privatestorage.io"
   ]
 , "monitoringDomains": [
-    "monitoring.privatestorage.io"
-  , "monitoring.private.storage"
+    "monitoring.private.storage"
+  , "monitoring.privatestorage.io"
   ]
 , "letsEncryptAdminEmail": "jean-paul@privatestorage.io"
 , "allowedChargeOrigins": [