Don't cache Zookeeper DNS
Don't cache Zookeeper DNS

Make sure we re-resolve the DNS name every time we reconnect to a
server. In environments where DNS changes often such as Kubernetes we
can't cache the IP address.

Signed-off-by: Jon Tirsen <a563f38b2a987e2aee263634a499e77cd89fe2fc@squareup.com>

vitessio/vitess,vitessio/vitess,tinyspeck/vitess,tinyspeck/vitess,mahak/vitess,vitessio/vitess,mahak/vitess,tinyspeck/vitess,vitessio/vitess,mahak/vitess,mahak/vitess,tinyspeck/vitess,vitessio/vitess,tinyspeck/vitess,tinyspeck/vitess,vitessio/vitess,mahak/vitess,vitessio/vitess,tinyspeck/vitess,mahak/vitess,mahak/vitess,mahak/vitess,vitessio/vitess