Merge branch 'ecchronos-2.0' into ecchronos-3.0 #764

Job	Run time
tests (Unit tests, test jacoco:report, 3.6)	9m 44s
tests (Style check, compile com.mycila:license-maven-plugin:check pmd:pmd pmd:cpd pmd:check pmd:c...	9m 49s
tests (OSGi integration, install -P docker-integration-test,osgi-integration-tests -Dit.cassandra...	14m 55s
tests (Standalone integration 3.0, verify -P docker-integration-test,standalone-integration-tests...	13m 9s
tests (Standalone integration 3.11, verify -P docker-integration-test,standalone-integration-test...	13m 47s
tests (Standalone integration 4.0, verify -P docker-integration-test,standalone-integration-tests...	14m 34s
tests (Python 2.7 integration, verify -P docker-integration-test,python-integration-tests -DskipU...	8m 24s
tests (Python 3.6 integration, verify -P docker-integration-test,python-integration-tests -DskipU...	12m 22s
	1h 36m 44s

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