check healthy pool array instead of pool object for conn count
check healthy pool array instead of pool object for conn count

kulbirsaini/rethinkdbdash,mbroadst/rethunk,adammcarth/rethinkdbdash,tswayne/rethinkdbdash,mbroadst/rethinkdbdash,neumino/rethinkdbdash,beni55/rethinkdbdash