Backport connection pool limit from 1.8.x branch to 1.7.x

Original commit: 2d70a391074755b85799fba4943c6fd743308f6b

Added an option for netty connection pool to limit the time when connection can be put back to pool.
In case of Amazon Cloud DNS records can change in seconds, and taking into account that AHC caches already resolved connection and never re-resolve DNS records if response if ok, introducing option to limit life for cached connection, to be able to gracefully route traffic to new host in case dns records changed.
Updating POM version