fix(kubelet): no cloud config for external cloud provider (#9793)

roles/kubernetes/node/templates/kubelet.env.v1beta1.j2

@@ -33,8 +33,10 @@ KUBELET_VOLUME_PLUGIN="--volume-plugin-dir={{ kubelet_flexvolumes_plugins_dir }}
 {% if kube_network_plugin is defined and kube_network_plugin == "cloud" %}
 KUBELET_NETWORK_PLUGIN="--hairpin-mode=promiscuous-bridge --network-plugin=kubenet"
 {% endif %}
-{% if cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce", "external"] %}
+{% if cloud_provider is defined and cloud_provider in ["openstack", "azure", "vsphere", "aws", "gce"] %}
 KUBELET_CLOUDPROVIDER="--cloud-provider={{ cloud_provider }} --cloud-config={{ kube_config_dir }}/cloud_config"
+{% elif cloud_provider is defined and cloud_provider in ["external"] %}
+KUBELET_CLOUDPROVIDER="--cloud-provider={{ cloud_provider }}"
 {% else %}
 KUBELET_CLOUDPROVIDER=""
 {% endif %}