message: fix flaky RBAC integration test.
diff: @@ -89,10 +89,10 @@ config:
  ASSERT_TRUE(tcp_client->connected());
  tcp_client->close();
  - EXPECT_EQ(1U, test_server_->counter("tcp.rbac.allowed")->value());
  + test_server_->waitForCounterGe("tcp.rbac.allowed", 1);
  EXPECT_EQ(0U, test_server_->counter("tcp.rbac.denied")->value());
  EXPECT_EQ(0U, test_server_->counter("tcp.rbac.shadow_allowed")->value());
  - EXPECT_EQ(1U, test_server_->counter("tcp.rbac.shadow_denied")->value());
  + test_server_->waitForCounterGe("tcp.rbac.shadow_denied", 1);
  }
  TEST_P(RoleBasedAccessControlNetworkFilterIntegrationTest, Denied) {
  @@ -118,7 +118,6 @@ config:
  )EOF");
  IntegrationTcpClientPtr tcp_client = makeTcpConnection(lookupPort("listener_0"));
  tcp_client->write("hello");
  - ASSERT_TRUE(tcp_client->connected());
  tcp_client->waitForDisconnect();
  EXPECT_EQ(0U, test_server_->counter("tcp.rbac.allowed")->value());
  