types/netmap,*: remove some redundant fields from NetMap

Updates #12639

Change-Id: Ia50b15529bd1c002cdd2c937cdfbe69c06fa2dc8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

wgengine/magicsock/magicsock_test.go

@@ -2200,9 +2200,9 @@ func TestIsWireGuardOnlyPeer(t *testing.T) {
 	defer m.Close()
 
 	nm := &netmap.NetworkMap{
-		Name:    "ts",
 		NodeKey: m.privateKey.Public(),
 		SelfNode: (&tailcfg.Node{
+			Name:      "ts.",
 			Addresses: []netip.Prefix{tsaip},
 		}).View(),
 		Peers: nodeViews([]*tailcfg.Node{
@@ -2264,9 +2264,9 @@ func TestIsWireGuardOnlyPeerWithMasquerade(t *testing.T) {
 	defer m.Close()
 
 	nm := &netmap.NetworkMap{
-		Name:    "ts",
 		NodeKey: m.privateKey.Public(),
 		SelfNode: (&tailcfg.Node{
+			Name:      "ts.",
 			Addresses: []netip.Prefix{tsaip},
 		}).View(),
 		Peers: nodeViews([]*tailcfg.Node{
@@ -2400,9 +2400,9 @@ func TestIsWireGuardOnlyPickEndpointByPing(t *testing.T) {
 	wgEpV6 := netip.MustParseAddrPort(v6.LocalAddr().String())
 
 	nm := &netmap.NetworkMap{
-		Name:    "ts",
 		NodeKey: m.privateKey.Public(),
 		SelfNode: (&tailcfg.Node{
+			Name:      "ts.",
 			Addresses: []netip.Prefix{tsaip},
 		}).View(),
 		Peers: nodeViews([]*tailcfg.Node{