Update Tailscale policy to allow broader access for relay applications

- Modified the Tailscale policy to permit traffic from all sources to the 'udm' tag for relay applications, while maintaining existing rules for the superuser group.

Author: rajsinghtech

tailscale/policy.hujson

@@ -74,7 +74,14 @@
 			"ip":  ["*"],
 		},
 		{
-			"src": ["group:superuser", "tag:udm", "tag:k8s", "tag:k8s-operator"],
+			"src": ["*"],
+			"dst": ["tag:udm"],
+			"app": {
+				"tailscale.com/cap/relay": [],
+			},
+		},
+		{
+			"src": ["group:superuser"],
 			"dst": ["tag:udm"],
       "ip": ["*"],
 			"app": {