Removal of support for JGroups clustering

In 9.0, Guidewire support for clustering no longer relies on JGroups. Instead, PolicyCenter clusters use PPP protocol for direct server-to-server communication and leverage the database for distributing broadcast messages.

As a consequence, the following configuration parameters are obsolete:

ClusterMulticastAddress
ClusterMulticastPort
ClusterMulticastTTL
ClusterProtocolStack
ClusterProtocolStackOption1
ClusterProtocolStackOption2
JGroupsClusterChannel
JGroupsWatchdogHeartbeatIntervalSecs
JGroupsWatchdoMissedHeartbeatsBeforeReset

In place of these configuration parameters, use the following mechanisms to configure clustering:

Add configuration parameters to cluster plugin implementations
Use system property overrides at server startup