Put the original domain first

The original domain got some state created for it by certbot.  The
certificates are anchored to `payments.privatestorage.io` in the filesystem.
The code handling these domains uses the first domain name in the list to find
the certificates, so make it match the filesystem state.

morph/grid/production/config.json

@@ -3,8 +3,8 @@
 , "stripeSecretKeyPath": "./secrets/stripe.secret"
 , "passValue": 1000000
 , "issuerDomains": [
-    "payments.private.storage"
-  , "payments.privatestorage.io"
+    "payments.privatestorage.io"
+  , "payments.private.storage"
   ]
 , "letsEncryptAdminEmail": "jean-paul@privatestorage.io"
 , "allowedChargeOrigins": [