Merge plugins where the modularization is "not" needed
many plugins are quite small and can be merged in bigger plugins
- do we need SIL plugins or should we have an af3.safety plugins with all safety stuff?
- testing and testing.random can be merged
- pacemaker is too small
- scheduling and efficient deployment are good candidates to be merged
(from redmine: issue id 1666, created on 2013-09-02, closed on 2018-02-14)