Add Akka into open source packages testing

[mamatha-jv]

This issue is opened to track the process of adding Akka into open source packages testing at https://github.com/AdoptOpenJDK/openjdk-tests/tree/master/thirdparty_containers

Refer issue #172 for more details.

[mamatha-jv]

Seeing OutOfMemory issue with hotspot build so I have to run tests again with increased heap

[smlambert]

Is this work in a branch somewhere? If so, please document here. If not, I will suggest we close it (leaving the app in the list at #172), until someone is actually working on it.

[smlambert]

Closing this as stale, its in the list in #172 should we wish to address.