[hibernate-dev] [OGM] Move container integration test to a separate default test cycle

This is a follow up on https://github.com/hibernate/hibernate-ogm/pull/307#issuecomment-38453092 We keep piling up new backends, new containers to test and new rules checked at build time. A consequence is that it is becoming less and less pleasant to work on OGM. You can see that n version of Naked+WF+EAP+... multiplied by m backends simply will make this project horrendously slow to contribute to. I imagine n = 3 or 4 and m = 10 in a medium term. I see two options that would keep us around for a while: 1. Make the container integration tests only run with a specific option activated on the CI. 2. Move the container integration tests outside in a different repo altogether. I do prefer 1. Emmanuel