spring.config.import in DynamicPropertySource is not contributed using ConfigDataApplicationContextInitializer in tests

[eddumelendez]

Describe the bug
If ConfigDataApplicationContextInitializer is added to tests then properties declared in DynamicPropertySource are not contributed. When I was debugging and put a breakpoint in this class, it was never called.

I did the same for spring-cloud-vault in this example. However, in this case it works.

Locally, I removed those lines and test it similar to the vault example, see changes here, and it worked. Looks like those lines were available since version 3.0.2.

The same happens for spring-cloud-zookeeper and spring-cloud-config. I haven't open issues for those projects yet but if you agree I can do it too.

Sample
https://github.com/eddumelendez/testcontainers-samples/tree/spring-cloud-consul/spring-cloud-consul