* Fix compatibility after Java DSL migration to the SI Core
* Also upgrade all the JMS sample to the JMS 2.0
* Fix default `connectionFactory` bean reference to the current `jmsConnectionFactory`
* Remove unsupported JPA-1.0 Spec via `OpenJpaAutoConfiguration`, since the minimum now is JPA-2.0
* Remove non-lambda sample since minimum now is Java 8
* Rename `PromiseTest` to `MonoTest` and fix it to Reactor 3.0
* Fix `stomp-server.xml` to use proper Reactor 3.0 `eactor.util.function.Tuples` for SpEL
* Regenerate POMs
- PR Comments
- Switch to Jackson2
- Fix oxm config
Polishing
INTSAMPLES-127 Update to SI 4.0.0.RC1
INTSAMPLES-127 Remove Servlet Dependency
travel sample; see INT-3350.
INTSAMPLES-127 Update Samples to SI 4.0.0
JIRA: https://jira.spring.io/browse/INTSAMPLES-127
Created `maint` branch for ongoing SI 3.0.x samples.