skip empty sni (#1909)
skip empty sni (#1909)

Signed-off-by: Kuat Yessenov <78a0b7007f2d7b7ec75106f37841ba73f23168e2@google.com>
lizan/proxy,istio/proxy,lizan/proxy,lizan/proxy,istio/proxy,istio/proxy,lizan/proxy,istio/proxy