Refactor schedule manager unittests (#601) #804

Job	Run time
tests (Unit tests, test jacoco:report)	3m 24s
tests (Unit tests, test jacoco:report)	3m 24s
tests (Style check, compile com.mycila:license-maven-plugin:check pmd:pmd pmd:cpd pmd:check pmd:c...	1m 58s
tests (Style check, compile com.mycila:license-maven-plugin:check pmd:pmd pmd:cpd pmd:check pmd:c...	1m 58s
tests (OSGi integration, install -P docker-integration-test,osgi-integration-tests -DskipUTs, osg...	5m 46s
tests (OSGi integration, install -P docker-integration-test,osgi-integration-tests -DskipUTs, osg...	5m 46s
tests (Standalone integration 4.0, verify -P docker-integration-test,standalone-integration-tests...	11m 0s
tests (Standalone integration 4.0, verify -P docker-integration-test,standalone-integration-tests...	10m 2s
tests (Standalone integration 4.1, verify -P docker-integration-test,standalone-integration-tests...	10m 35s
tests (Standalone integration 4.1, verify -P docker-integration-test,standalone-integration-tests...	10m 35s
tests (Standalone integration 5.0-alpha1, verify -P docker-integration-test,standalone-integratio...	11m 49s
tests (Standalone integration 5.0-alpha1, verify -P docker-integration-test,standalone-integratio...	11m 49s
tests (Python integration, verify -P docker-integration-test,python-integration-tests -DskipUTs, ...	8m 34s
tests (Python integration, verify -P docker-integration-test,python-integration-tests -DskipUTs, ...	8m 34s
	1h 45m 14s

Provide feedback