support CoreDNS use host network and config dns port (#10617)

roles/kubernetes-apps/ansible/templates/coredns-deployment.yml.j2

@@ -24,6 +24,7 @@ spec:
       annotations:
         createdby: 'kubespray'
     spec:
+      hostNetwork: {{ coredns_host_network | default(false) }}
       securityContext:
         seccompProfile:
           type: RuntimeDefault
@@ -75,10 +76,10 @@ spec:
         - name: config-volume
           mountPath: /etc/coredns
         ports:
-        - containerPort: 53
+        - containerPort: {{ coredns_port }}
           name: dns
           protocol: UDP
-        - containerPort: 53
+        - containerPort: {{ coredns_port }}
           name: dns-tcp
           protocol: TCP
         - containerPort: 9153