[BZ-1099767] return a null in legacy api when trying to get a non-existing entry point
(cherry picked from commit a2755f722c8100c8539e2402c88d4244bcb492ba)
Define the packages to be imported, add persistence packages - https://issues.jboss.org/browse/JBPM-4345
(cherry picked from commit ec4f0e1e179e9b773619ebe0e4fe38cb390728ea)
fix TemporalEvaluatorFactoryTest
[BZ-918682][BZ-1101154] Unable to identify what process has invalid data
BZ-1100655: removing unnecessary calls to System.getProperties()
(cherry picked from commit 8492afe7e42d6e91ef18a92e37317ecaa01d1764)