add ako overlay for windows

windows/ako/README.md

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+# add tolerations for AKO pod on windows clusters
+
+this can be applied after the fact to a mgmt cluster in order to allow for the AKO pods to run on the control plane nodes which is necessary on windows clusters
+
+
+# Usage
+
+Connect to your management cluster and run the following.
+
+on linux
+
+```
+export AKO_OVERLAY=`cat ako-toleration-overlay.yml| base64 -w 0`
+```
+
+on mac:
+
+```
+export AKO_OVERLAY=`cat ako-toleration-overlay.yml| base64`
+```
+
+Run the below commands to patch the secret and add the overlay.
+
+get the secret name to modify. the below command will list out some secrets, grab the name of the one that has your cluster name as a prefix.
+
+
+```
+kubectl get secrets | grep ingress
+```
+
+```
+kubectl patch secret <secret-from-above> -p '{"data": {"overlays.yaml": "'$AKO_OVERLAY'"}}'
+```
+
+
+connect to your windows cluster and you should see the AKO pod recreate shortly after.