[feature] Add coredns_additional_configs to handle any extra configurations for coredns deployment (#10023) (#10025)

roles/kubernetes-apps/ansible/defaults/main.yml

@@ -13,6 +13,10 @@ coredns_ordinal_suffix: ""
 coredns_deployment_nodeselector: "kubernetes.io/os: linux"
 coredns_default_zone_cache_block: |
   cache 30
+# coredns_additional_configs adds any extra configuration to coredns
+# coredns_additional_configs: |
+#   whoami
+#   local
 
 # dns_upstream_forward_extra_opts apply to coredns forward section as well as nodelocaldns upstream target forward section
 # dns_upstream_forward_extra_opts:

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

@@ -31,6 +31,9 @@ data:
 {%   endfor %}
 {% endif %}
     .:53 {
+        {% if coredns_additional_configs is defined %}
+        {{ coredns_additional_configs | indent(width=8, first=False) }}
+        {% endif %}
         errors
         health {
             lameduck 5s