Port JBAS-5170: HASingletonElectionPolicySimple does not handle heterogeneous topologies

HASingletonElectionPolicySimple is just getting the current view from HAPartition and making a decision based on that, ignoring the fact that the service it's managing may not be running on all members of the cluster.

This issue also solves the issue where using a 'kill -9' is required to cause singleton's to start on other nodes when taking some down.

With this fix, users of HASingletonElectionPolicySimple can switch to ExtendedElectionPolicySimple to solve both issues mentioned above.