tailcfg: define some Node.Capabilities about SSH, its config
Updates
@@ -1484,6 +1484,8 @@ type Oauth2Token struct {
CapabilityFileSharing = "https://tailscale.com/cap/file-sharing"
CapabilityAdmin = "https://tailscale.com/cap/is-admin"
+ CapabilitySSH = "https://tailscale.com/cap/ssh" // feature enabled/available
+ CapabilitySSHRuleIn = "https://tailscale.com/cap/ssh-rule-in" // some SSH rule reach this node
// Inter-node capabilities.
