Additional changes for JIRA feature request SGF-226 supporting GemFire's new Cluster-based Configuration Service.  Renamed the CacheUsingSharedConfigurationIntegrationTest class to CacheClusterConfigurationIntegrationTest and added an additional test case to assert the default, non-use of cluster configuration behavior.  Renamed GemFire System properties references for enabling/disabling Cluster Config based revision r48252 in GemFire 8.