JIRA: https://jira.spring.io/browse/INT-4363
* Register `HandlerMethodArgumentResolver`s in the
`IntegrationRegistrar` as `BeanDefinition`s to let them be configured by
the `BeanFactory` callback.
The direct instance doesn't call callbacks
* Use `JacksonPresent` in the `IntegrationRegistrar` instead of local
property
* Some code style polishing for the `IntegrationRegistrar`
* Add `JsonPathTests.testJsonPathOnPayloadAnnotation()` to ensure
that `PayloadExpressionArgumentResolver` is properly configured by the
`BeanFactory` and `#jsonPath()` SpEL-function is properly evaluated on
the `@Payload` for method `@ServiceActivator` method argument
9414ceef86