Brad Fitzpatrick 3928ea206e control/controlhttp: send expected control public key in upgrade request
So we can do key rotation later and have small windows of overlapping
valid server keys.

Updates #3488

Change-Id: Ib5c7f2006a797a069e3f55d37f5d41f533e82f71
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-03-08 15:00:47 -08:00
..