http2/h2i: add flag to dial one ip:port but SNI/:authority like it's another

Change-Id: I35049c37558ddedb9056278c9878f3e3fd6f7f76
Reviewed-on: https://go-review.googlesource.com/53640
Reviewed-by: Avelino <t@avelino.xxx>
Reviewed-by: Tom Bergan <tombergan@google.com>
1 file changed