Fixes #1253 : HazelcastInstance Future.get not completing on failure
Catching the throwable to make sure that the future always is released
More HazelcastInstance Future tweaks
Merge pull request #1257 from pveentjer/fix/3.x/1253-hazelcastfutureget-nocompletesonfailure

Fixes #1253 : HazelcastInstance Future.get not completing on failure