fix: reuse existing cloudflare tunnel across cluster rebuilds

Author: xnoto

operators/cloudflare/cluster-tunnel.yaml

@@ -6,8 +6,8 @@ metadata:
   annotations:
     argocd.argoproj.io/sync-wave: "0"
 spec:
-  newTunnel:
-    name: cluster-apps-crc
+  existingTunnel:
+    name: cluster-apps
   cloudflare:
     accountId: "03f750691b4ad4d59aa4b7205adaa108"
     domain: makeitwork.cloud