Fix 2 Broken Integration Tests

[codeconsole]

grails-async/examples/pubsub-demo/src/integration-test/groovy/pubsub/demo/PubSubSpec.groovy

Lines 70 to 83 in 9e757f7

	@Rollback
	@Ignore
	void 'Test synchronous event listener'() {
	when: 'when a event listener cancels an insert'
	bookService.saveBook('UK Politics')
	// due to https://hibernate.atlassian.net/browse/HHH-11721
	// an exception must be thrown
	then: 'the insert was cancelled'
	def e = thrown IllegalArgumentException
	e.message == 'Books about politics not allowed'
	}
	}

grails-async/examples/pubsub-demo/src/integration-test/groovy/pubsub/demo/TaskControllerSpec.groovy

Lines 28 to 39 in 9e757f7

	@Ignore
	void 'test async error handling'() {
	when: 'we invoke an endpoint that throws an exception'
	def request = HttpRequest.GET('/task/error')
	client.toBlocking().exchange(request, Argument.of(String), Argument.of(String))
	then: 'the response is as expected'
	def e = thrown(HttpClientResponseException)
	e.response.status == HttpStatus.INTERNAL_SERVER_ERROR
	e.response.body() == 'error occurred'
	}