=act #3738 Fix memory leaks in tests

* afterAll not called when all tests marked as ignore,
  invokeBeforeAllAndAfterAllEvenIfNoTestsAreExpected = true
  should solve that, but changed to pending in Ticket1978 anyway
* Try to shutdown when ActorSystem init fails. It is difficult
  to cover all scenarios, but this should improve the situation.
  This was the reason why DeployerSpec leaked.
* missing shutdown in some tests
!tes #3544 Added 'system' as default parameter to the shutdown method on
TestKit
=act #3825 Fix bug in BalancingSpec

* The problem was that the pool had 10 routees and
  depend on blocking to verify balancing scheduling
  to unblocked routee, but the thread pool size was 8
  and therefore routee 8 and 9 was never scheduled
  (blocked) as expected.
!per #3828 Rename receiveReplay to receiveRecover

- because it handles messages related to recovery (snapshots and replayed messages)
=rem #3827 Adjust gate setting in AkkaProtocolStressTest
=per #3829 Set default expectation timeout to 10s
=clu #3826 Harden cluster.StressSpec

* The Identify message didn't get through to the master, which
  was stopping at the same time, and it didn't got redirected to
  deadletters, i.e. the "termination race"
!con #3820 Add reconnection to ReliableProxy
Merge pull request #1936 from akka/wip-3738-memory-leaks-in-tests-patriknw

=act #3738 Fix memory leaks in tests
Merge pull request #1938 from akka/wip-3825-BalancingSpec-patriknw

=act #3825 Fix bug in BalancingSpec
Merge pull request #1940 from akka/wip-3827-AkkaProtocolStressTest-patriknw

=rem #3827 Adjust gate setting in AkkaProtocolStressTest
Merge pull request #1939 from krasserm/wip-3828-rename-recreiveReplay-krasserm

!per #3828 Rename receiveReplay to receiveRecover
Merge pull request #1941 from krasserm/wip-3829-increase-default-timeout-krasserm

=per #3829 Set default expectation timeout to 10s
+act #3770 Added Java 8 friendly APIs for Actor and FSM
=act - Optimization of actorcell and actor field clearing
=per #3824 Do not share testActor across tests
Merge pull request #1879 from akka/wip-java8-interop-ban

+act #3770 Added Java 8 friendly APIs for Actor and FSM
Merge pull request #1935 from drexin/wip-3544-improve-testkit

+tes Added system as default param to TestKit.shutdown
Merge pull request #1942 from akka/wip-3826-cluster.StressSpec-patriknw

=clu #3826 Harden cluster.StressSpec
Merge pull request #1943 from akka/wip-3159-squash-reliable-proxy-reconnect-patriknw

!con #3820 Add reconnection to ReliableProxy