+act #3532: Add ask support for Java API
=clu #3519 Cluster router should use provided supervisor strategy
Merge pull request #1616 from drewhk/wip-actorselection-ask-test-drewhk

+act #3532: Add ask support for Java API
Merge pull request #1623 from drewhk/wip-3519-clusterrouter-supervisor-fix-drewhk

=clu #3519 Cluster router should use provided supervisor strategy
Merge remote-tracking branch: upstream/master