message: Fix set display layout test
diff: @@ -69,6 +69,7 @@ const uint32_t kAppId = 1u;
  const uint32_t kCmdId = 1u;
  const uint32_t kConnectionKey = 2u;
  const uint32_t kCorrelationKey = 2u;
  +const std::string kLayout = "media";
  } // namespace
  MATCHER_P(CheckMshCorrId, corr_id, "") {
  @@ -189,6 +190,7 @@ TEST_F(SetDisplayLayoutRequestTest, Run_SUCCESS) {
  MockAppPtr mock_app(CreateMockApp());
  EXPECT_CALL(app_mngr_, application(kConnectionKey))
  .WillOnce(Return(mock_app));
  + EXPECT_CALL(*mock_app, display_layout()).WillOnce(ReturnRef(kLayout));
  EXPECT_CALL(*mock_app, app_id()).WillOnce(Return(kAppId));
  EXPECT_CALL(app_mngr_, GetNextHMICorrelationID())
  