Test integration with start.spring.io

[marcingrzejszczak]

Each project could have a test to see if you can still generate a project in initlizr from scratch.

[snicoll]

I don't really know how that would work but it is interesting. A few observations:

• Please don't use start.spring.io as the target for the test. Starting your own is relatively easy, last resort use our dev instance
• This is not only about getting an empty project but making sure that the necessary setup works as expected (see Building maven project for spring cloud contract with kotlin spring-io/start.spring.io#278 for a concrete example).

I guess something that creates a new project and then apply some sort of customizations and make sure the feature works would be very nice. I expect this can be useful for other projects in the portfolio so not making the machinery Spring Cloud specific would be very much welcome.