[Feature] Option to set connection for database migration

modules/system/classes/UpdateManager.php

@@ -128,6 +128,18 @@ public function bindContainerObjects()
         $this->repository = App::make('migration.repository');
     }
 
+    /**
+     * Sets the database connection to use for migrations.
+     * @param string $connection
+     * @return self
+     */
+    public function setConnection($connection)
+    {
+        $this->migrator->setConnection($connection);
+
+        return $this;
+    }
+
     /**
      * Creates the migration table and updates
      * @return self

modules/system/console/WinterUp.php

@@ -20,7 +20,8 @@ class WinterUp extends Command implements Isolatable
      * @var string
      */
     protected $signature = 'winter:up
-                            {--seed : Included for compatibility with Laravel default signature, no effect at this time}';
+                            {--seed : Included for compatibility with Laravel default signature, no effect at this time}
+                            {--connection= : The database connection to use}';
 
     /**
      * The console command description.
@@ -47,6 +48,7 @@ public function handle()
 
         UpdateManager::instance()
             ->setNotesOutput($this->output)
+            ->setConnection($this->option('connection'))
             ->update();
     }
 }