MAGETWO-32953: Fix Bamboo builds

 - Added declaration for Developer module to composer.json under root directory

Author: marcozheng

composer.json

@@ -79,6 +79,7 @@
         "magento/module-customer": "self.version",
         "magento/module-customer-import-export": "self.version",
         "magento/module-design-editor": "self.version",
+        "magento/module-developer": "self.version",
         "magento/module-dhl": "self.version",
         "magento/module-directory": "self.version",
         "magento/module-downloadable": "self.version",