Fixing typo in kubelet cluster-dns and cluster-domain flags

roles/kubernetes/node/templates/kubelet.j2

@@ -19,13 +19,13 @@ KUBELET_HOSTNAME="--hostname-override={{ ansible_hostname }}"
 
 {# DNS settings for kubelet #}
 {% if dns_mode == 'kubedns' %}
-{% set kubelet_args_cluster_dns %}--cluster_dns={{ skydns_server }}{% endset %}
+{% set kubelet_args_cluster_dns %}--cluster-dns={{ skydns_server }}{% endset %}
 {% elif dns_mode == 'dnsmasq_kubedns' %}
-{% set kubelet_args_cluster_dns %}--cluster_dns={{ dns_server }}{% endset %}
+{% set kubelet_args_cluster_dns %}--cluster-dns={{ dns_server }}{% endset %}
 {% else %}
 {% set kubelet_args_cluster_dns %}{% endset %}
 {% endif %}
-{% set kubelet_args_dns %}{{ kubelet_args_cluster_dns }} --cluster_domain={{ dns_domain }} --resolv-conf={{ kube_resolv_conf }}{% endset %}
+{% set kubelet_args_dns %}{{ kubelet_args_cluster_dns }} --cluster-domain={{ dns_domain }} --resolv-conf={{ kube_resolv_conf }}{% endset %}
 
 {# Location of the apiserver #}
 {% set kubelet_args_kubeconfig %}--kubeconfig={{ kube_config_dir}}/node-kubeconfig.yaml --require-kubeconfig{% endset %}