JedisPool / JedisSentinelPool resets returning object's state (watched,
multi)

* BinaryClient / BinaryJedis : added feature to reset its state
(watched, multi)
* JedisPool / JedisSentinelPool : calls new feature (reset state) when
Jedis object returns to pool
* Unit Test included
Merge branch 'reset-state-of-jedis-client' of github.com:HeartSaVioR/jedis into HeartSaVioR-reset-state-of-jedis-client