Contains feedback from @Kehrlann
Original commit by @abelsromero - amended to keep compatibility with Spring Boot 2
Add integration tests
* use Maven modules to do so
* spring-cloud-bindings goes one level down
* addition of a spring-cloud-bindings parent
Inspired by @gregturn and spring-data-rest
Integrate PR#94 comments from @Kehrlann
* move bindings to src/test/resources
* get rid of unused / duplicate annotations
* move all dependencies to test scope for test projects
Spring Boot 2 support
* only in branch 1.x, SB3 support is in main branch