Added new configuration item for extra tolerations in DNS autoscaler

Signed-off-by: Sébastien Masset <smt.masset@gmail.com>

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

@@ -24,6 +24,7 @@ nodelocaldns_secondary_prometheus_port: 9255
 dns_autoscaler_cpu_requests: 20m
 dns_autoscaler_memory_requests: 10Mi
 dns_autoscaler_deployment_nodeselector: "kubernetes.io/os: linux"
+# dns_autoscaler_extra_tolerations: [{effect: NoSchedule, operator: "Exists"}]
 
 # etcd metrics
 # etcd_metrics_service_labels:

roles/kubernetes-apps/ansible/templates/dns-autoscaler.yml.j2

@@ -45,6 +45,9 @@ spec:
           key: node-role.kubernetes.io/master
         - effect: NoSchedule
           key: node-role.kubernetes.io/control-plane
+{% if dns_autoscaler_extra_tolerations is defined %}
+        {{ dns_autoscaler_extra_tolerations | list | to_nice_yaml(indent=2) | indent(8) }}
+{% endif %}
       affinity:
         podAntiAffinity:
           requiredDuringSchedulingIgnoredDuringExecution: