Fix integration test

Author: tanx

test/integration/action/action-integration.spec.js

@@ -348,12 +348,13 @@ describe('Action Integration Tests', function() {
       const isValid = await payments1.decodeInvoice({
         invoice: store2.invoice.uri,
       });
+      expect(isValid, 'to be', true);
+      while (!store1.payment.fee) await nap(100);
       expect(
         parseFloat(store1.payment.fee),
         'to be greater than or equal to',
         0
       );
-      expect(isValid, 'to be', true);
     });
 
     it('should send lightning payment from request', async () => {