simplify single-node.yaml

Co-authored-by: Joshua Casey <joshuatcasey@gmail.com>

hack/lib/kind-config/single-node.yaml

@@ -19,16 +19,16 @@ nodes:
       containerPort: 31235
       hostPort: 12346
       listenAddress: 127.0.0.1
-
-
-    #! Kind v0.12.0 ignores kubeadm.k8s.io/v1beta2 for Kube v1.23+ but uses it for older versions of Kube.
-    #! Previous versions of Kind would use kubeadm.k8s.io/v1beta2 for all versions of Kube including 1.23.
-    #! To try to maximize compatibility with various versions of Kind and Kube, define this
-    #! ClusterConfiguration twice and hope that Kind will use the one that it likes for the given version
-    #! of Kube, and ignore the one that it doesn't like. This seems to work, at least for Kind v0.12.0.
+    #@ if data.values.enable_audit_logs:
+    #! mount the local file on the control plane
+    extraMounts:
+      - hostPath: /tmp/metadata-audit-policy.yaml
+        containerPath: /etc/kubernetes/policies/audit-policy.yaml
+        readOnly: true
+    #@ end
+#! Apply these patches to all nodes.
 kubeadmConfigPatches:
 - |
-      apiVersion: kubeadm.k8s.io/v1beta2
   kind: ClusterConfiguration
   apiServer:
     extraArgs:
@@ -41,13 +41,6 @@ nodes:
       #! are exercised. For whatever reason, leaving this as false (i.e. use kube-proxy) appears to
       #! hide some network misconfigurations when used internally by the API server aggregation layer.
       enable-aggregator-routing: "true"
-    - |
-      apiVersion: kubeadm.k8s.io/v1beta3
-      kind: ClusterConfiguration
-      apiServer:
-        extraArgs:
-          # See comment above.
-          enable-aggregator-routing: "true"
 #@ if data.values.enable_audit_logs:
 - |
   kind: ClusterConfiguration
@@ -68,9 +61,4 @@ nodes:
           mountPath: "/var/log/kubernetes"
           readOnly: false
           pathType: DirectoryOrCreate
-    #! mount the local file on the control plane
-    extraMounts:
-    - hostPath: /tmp/metadata-audit-policy.yaml
-      containerPath: /etc/kubernetes/policies/audit-policy.yaml
-      readOnly: true
 #@ end