This allows us to run kolab4 tests in CI (tested on centos8).
The test is executed via ci/Makefile (all target)
Some of the changes include:
- Configurable ssl certificate
- Do not persist the node modules
- swoole needs to be built before the rest
- Install kolab from the new mirror
- Buildkit seems to be the reason for the centos7 problems
- Various test fixes, and skip tests that don't currently pass
- docker-compose is now a plugin