Merge pull request #2472 from woopstar/patch-12

Make sure output from extra args is strings

roles/kubernetes/master/templates/kubeadm-config.yaml.j2

@@ -62,7 +62,7 @@ apiServerExtraArgs:
 {% endif %}
   allow-privileged: "true"
 {% for key in kube_kubeadm_apiserver_extra_args %}
-  {{ key }}: {{ kube_kubeadm_apiserver_extra_args[key] }}
+  {{ key }}: "{{ kube_kubeadm_apiserver_extra_args[key] }}"
 {% endfor %}
 controllerManagerExtraArgs:
   node-monitor-grace-period: {{ kube_controller_node_monitor_grace_period }}
@@ -72,12 +72,12 @@ controllerManagerExtraArgs:
   feature-gates: {{ kube_feature_gates|join(',') }}
 {% endif %}
 {% for key in kube_kubeadm_controller_extra_args %}
-  {{ key }}: {{ kube_kubeadm_controller_extra_args[key] }}
+  {{ key }}: "{{ kube_kubeadm_controller_extra_args[key] }}"
 {% endfor %}
 {% if kube_kubeadm_scheduler_extra_args|length > 0 %}
 schedulerExtraArgs:
 {% for key in kube_kubeadm_scheduler_extra_args %}
-  {{ key }}: {{ kube_kubeadm_scheduler_extra_args[key] }}
+  {{ key }}: "{{ kube_kubeadm_scheduler_extra_args[key] }}"
 {% endfor %}
 {% endif %}
 apiServerCertSANs: