* Add default license header to files which have no copyright or license header yet.
* yml extension should have been xml...
(cherry picked from commit 1ab2a5f1bc)
* Disable docker tests.
ci_complete
* Get rid of shippable groups 4 and 5. Redistribute the few remaining entries of group 4 to groups 1 to 3.
ci_complete
* Try group 1.