add couple TODOs

internal/machine/cluster/cluster.go

@@ -158,6 +158,7 @@ func (c *Cluster) AddMachine(ctx context.Context, req *pb.AddMachineRequest) (*p
 
 	// TODO: notify all cluster machines about the new machine so they can update their peers config.
 	//  In PoC we just notify the local machine.
+	// TODO: there is a race condition with network configuration if a new cluster is initialized on the machine.
 	c.newMachinesCh <- m
 
 	resp := &pb.AddMachineResponse{Machine: m}