Context

https://rest-assured.io/ is a very useful fwk to test REST endpoints or to check resources which are served via REST.

In some of the new INT tests we use the MagnoliaRestCLient (which has the "adavantage" of being instance aware) and do assertions with com.jayway.jsonpath:json-path-assert. 

We should add/enable rest-assured to the test framework, in a way that makes it convenient to test REST resources in the Magnolia context - e.g. with convenient default, etc.