add loopbackMigrationGrandfathered flag

common/models/user.json

@@ -27,6 +27,10 @@
       "type": "boolean",
       "default": false
     },
+    "isMigrationGrandfathered": {
+      "type": "boolean",
+      "default": false
+    },
     "username": {
       "type": "string",
       "lowercase": true,

seed/loopbackMigration.js

@@ -92,6 +92,8 @@ var users = dbObservable
     user.username = 'fcc' + uuid.v4().slice(0, 8);
     if (user.github) {
       user.isGithubCool = true;
+    } else {
+      user.isMigrationGrandfathered = true;
     }
     return user;
   })