Improve test coverage and integration tests
Child issues (updated 2020-12-16):
- sbws#27361
- sbws#28774
- sbws#29358
- sbws#29727
- sbws#30902
- sbws#33166
- sbws#33167
Integration tests with chutney (NL O2.1):
- sbws#33150
- sbws#40008
- sbws#40031
Coverage (NL O2.2):
- sbws#40030
Unit tests (NL O2.2):
- sbws#40032
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