Fix Windows external CI version template to use OOT

Author: CecileRobertMichon

templates/test/ci/cluster-template-prow-external-cloud-provider-ci-version.yaml

@@ -5,3 +5,4 @@ resources:
   - ../prow-ci-version
 patchesStrategicMerge:
   - ../../../flavors/external-cloud-provider/patches/external-cloud-provider.yaml
+  - patches/external-cloud-provider-windows.yaml

templates/test/ci/prow-external-cloud-provider-ci-version/kustomization.yaml

@@ -0,0 +1,13 @@
+---
+apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
+kind: KubeadmConfigTemplate
+metadata:
+  name: ${CLUSTER_NAME}-md-win
+spec:
+  template:
+    spec:
+      joinConfiguration:
+        nodeRegistration:
+          kubeletExtraArgs:
+            cloud-provider: external
+            feature-gates: WindowsHostProcessContainers=true,CSIMigrationAzureDisk=true