When getting a full map from control, disco keys for the nodes will also
be delivered. When communicating with a peer that is running without
being connected to control, and having that connection running based on
a TSMP learned disco key, we need to avoid overwriting the disco key for
that peer with the stale one control knows about.
Add a filter that filteres out keys from control, and replace them with
the TSMP learned disco keys.
Updates #12639
Signed-off-by: Claus Lensbøl <claus@tailscale.com>
Claus Lensbøl
ffaebd71fb