In prep for using 1.17 features.
Note the go.mod changes are due to:
https://golang.org/doc/go1.17#go-command
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
#1817 removed the only place in our CI where we executed our benchmark code.
Fix that by executing it everywhere.
The benchmarks are generally cheap and fast,
so this should add minimal overhead.
Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>
