How to change HASingleton election policy in EAP 5.x

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Issue

If I have 20 services with the HASingleton barrier defined, all 20 will run on the master node. Is there any way for singletons to be independently deployed across the cluster?
Can HASingletons be on nodes other than the master ?

Environment

Red Hat JBoss Enterprise Application Server (EAP)
- 5.x

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