Add note about setting correct kubelet work dir for k0s to documentation & fix name of helm parameter in docs (#668)

* Add note about setting correct kubelet work dir for k0s to documentation.

* Fix name of kubeletdir parameter for helm chart in documentation.

Author: soenkeliebau

docs/modules/secret-operator/pages/installation.adoc

@@ -35,25 +35,30 @@ Helm will deploy the operator in Kubernetes containers and apply the CRDs. You'r
 === Microk8s
 
 Microk8s uses a non-standard Kubelet state directory. Installing secret-operator on Microk8s requires the argument
-`--set kubeletDir=/var/snap/microk8s/common/var/lib/kubelet` to be added to the `helm install` command.
+`--set csiNodeDriver.kubeletDir=/var/snap/microk8s/common/var/lib/kubelet` to be added to the `helm install` command.
+
+=== k0s
+
+k0s uses a non-standard Kubelet state directory. Installing secret-operator on k0s requires the argument
+`--set csiNodeDriver.kubeletDir=/var/lib/k0s/kubelet` to be added to the `helm install` command.
 
 === HUAWEI cloud
 
 In some cases HUAWEI cloud has the kubelet directory located at `/mnt/paas/kubernetes/kubelet`, resulting in the following error:
 
 `failed to publish volume error=status: Unavailable, message: "failed to create secret parent dir /mnt/paas/kubernetes/kubelet/pods/<POD_ID>/volumes/kubernetes.io~csi/pvc-<PVC_ID>/mount: No such file or directory (os error 2)"`
 
-In case you are encountering the mentioned error (or secret-operator does not work on your HUAWEI cloud at all), you need to add the argument `--set kubeletDir=/mnt/paas/kubernetes/kubelet` to the `helm install` command.
+In case you are encountering the mentioned error (or secret-operator does not work on your HUAWEI cloud at all), you need to add the argument `--set csiNodeDriver.kubeletDir=/mnt/paas/kubernetes/kubelet` to the `helm install` command.
 
 === IBM cloud
 
 In some cases IBM cloud has the kubelet directory located at `/var/data/kubelet/`, resulting in the following error:
 
 `failed to publish volume error=status: Unavailable, message: "failed to create secret parent dir /var/data/kubelet/pods/<POD_ID>/volumes/kubernetes.io~csi/pvc-<PVC_ID>/mount: No such file or directory (os error 2)"`
 
-In case you are encountering the mentioned error (or secret-operator does not work on your IBM cloud at all), you need to add the argument `--set kubeletDir=/var/data/kubelet` to the `helm install` command.
+In case you are encountering the mentioned error (or secret-operator does not work on your IBM cloud at all), you need to add the argument `--set csiNodeDriver.kubeletDir=/var/data/kubelet` to the `helm install` command.
 
 === VMware Tanzu
 
 VMware Tanzu uses a non-standard Kubelet state directory. Installing secret-operator on Tanzu requires the argument
-`--set kubeletDir=/var/vcap/data/kubelet` to be added to the `helm install` command.
+`--set csiNodeDriver.kubeletDir=/var/vcap/data/kubelet` to be added to the `helm install` command.