Description of problem:

Platform BZ for JBRULES-3155 : Bug with default properties in KnowledgeStoreServiceImpl

You cannot overwrite default properties set by KnowledgeStoreServiceImpl.

Steps to Reproduce:

The following code doesn't affect "drools.processInstanceManagerFactory". 

 Environment env = KnowledgeBaseFactory.newEnvironment();
 env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);

 Properties properties = new Properties();
 properties.put("drools.processInstanceManagerFactory", "com.example.CustomJPAProcessInstanceManagerFactory");
 KnowledgeSessionConfiguration config = KnowledgeBaseFactory.newKnowledgeSessionConfiguration(properties);
         
 StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(KnowledgeService.getKnowledgeBase(), config, env);
  
Actual results:

ksession.getProcessInstanceManagerFactory() returns "org.jbpm.persistence.processinstance.JPAProcessInstanceManagerFactory"

And the class is used in the ksession.

Expected results:

ksession.getProcessInstanceManagerFactory() returns "com.example.CustomJPAProcessInstanceManagerFactory"

And the class is used in the ksession.