TUN-1052: Origintunneld can send back an Origincert to Cloudflared

tunnelrpc/pogs/tunnelrpc.go

@@ -32,6 +32,7 @@ type TunnelRegistration struct {
 	LogLines         []string
 	PermanentFailure bool
 	TunnelID         string `capnp:"tunnelID"`
+	OriginCert       string `capnp:"originCert"`
 }
 
 func MarshalTunnelRegistration(s tunnelrpc.TunnelRegistration, p *TunnelRegistration) error {

tunnelrpc/tunnelrpc.capnp

@@ -19,6 +19,8 @@ struct TunnelRegistration {
     permanentFailure @3 :Bool;
     # Displayed to user
     tunnelID @4 :Text;
+    # Certificate that authorizes the origin to run tunnels on the given url.
+    originCert @5 :Text;
 }
 
 struct RegistrationOptions {