ISPN-4520 JdbcBinaryStoreTest.testLoadAndStoreWithLifespanAndIdle random failures

* Increased the timeout to avoid false positives
ISPN-4478 ServerFailureRetrySingleOwnerTest should remove listener

* Before, the error inducing listener was not being removed, and that
was not appearing as a result that each test was creating a new bunch
of cache managers. Now, clean up is done after the test class has
finished and the listeners are correctly removed.
ISPN-4499 Prevent shadowing user-defined jgroups configuration file
ISPN-4512 CacheManagerTest.testCacheManagerRestartReusingConfigurations random failures

Move the up handler deregistration to CommandAwareRpcDispatcher.stop
TODO
Logging improvements
Fix TestingUtil.clearContent for secure cache managers
find_unstable_tests_teamcity wasn't using the command-line arguments
Log non-CacheRpcCommand responses
StateTransferFunctionalTest
Stop forked threads after each method, not just after the class
StateTransferLargeObjectTest