let coredns autoscaler to scale coredns

Author: mengqiy

tests/tasks/setup/eks/awscli-cp-with-vpc.yaml

@@ -79,7 +79,6 @@ spec:
       kubectl set env daemonset/aws-node -n kube-system ENABLE_PREFIX_DELEGATION=true
       # install csi drivers.
       kubectl apply -k "github.com/kubernetes-sigs/aws-ebs-csi-driver/deploy/kubernetes/overlays/stable/?ref=$(params.aws-ebs-csi-driver-version)"
-      # TODO: Calculate replicas based on the cluster size going forward.
       # Patching the coredns not to get scheduled on the monitoring node.
       kubectl patch deployment coredns --patch '{
         "spec": {
@@ -107,12 +106,11 @@ spec:
           }
         }
       }' -n kube-system
-      kubectl scale --replicas 1000 deploy coredns -n kube-system
       #ToDo - remove these comments after experimentation
       # Install EKS Pod Identity Agent 
       # ENDPOINT_FLAG=""
       # if [ -n "$(params.endpoint)" ]; then
       #   ENDPOINT_FLAG="--endpoint $(params.endpoint)"
       # fi
       # aws eks $ENDPOINT_FLAG create-addon --cluster-name $(params.cluster-name) --addon-name eks-pod-identity-agent --addon-version v1.0.0-eksbuild.1
-      # aws eks $ENDPOINT_FLAG --region $(params.region) wait cluster-active --name $(params.cluster-name) 
+      # aws eks $ENDPOINT_FLAG --region $(params.region) wait cluster-active --name $(params.cluster-name)