Move kubernetes/master to kubernetes/control-plane (#7218)

This is a small step to replace "master" with "control-plane" in
Kubespray project.

roles/kubernetes/control-plane/templates/apiserver-audit-webhook-config.yaml.j2

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Config
+clusters:
+- cluster:
+    server: {{ audit_webhook_server_url }}
+{% for key in audit_webhook_server_extra_args %}
+    {{ key }}: "{{ audit_webhook_server_extra_args[key] }}"
+{% endfor %}
+  name: auditsink
+contexts:
+- context:
+    cluster: auditsink
+    user: ""
+  name: default-context
+current-context: default-context
+preferences: {}
+users: []