Use dl.k8s.io instead of hardcoded GCS URIs (#2240)

The `storage.googleapis.com/kubernetes-release` URL is a hard coded path
to a GCS bucket location. To allow redirecting and spreading the load
across multiple hosting locations, the `dl.k8s.io` URL has been
introduced.

Signed-off-by: Sean McGinnis <[email protected]>

Author: stmcginnis

tests/playbooks/roles/install-k3s/tasks/main.yaml

@@ -157,7 +157,7 @@
 
       mkdir -p {{ ansible_user_dir }}/.kube
       scp -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i {{ ansible_user_dir }}/.ssh/id_rsa ubuntu@{{ k3s_fip }}:/etc/rancher/k3s/k3s.yaml {{ ansible_user_dir }}/.kube/config
-      curl -sLO# https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
+      curl -sLO# https://dl.k8s.io/release/$(curl -Ls https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl
       chmod +x ./kubectl; sudo mv ./kubectl /usr/local/bin/kubectl
       kubectl config set-cluster default --server=https://{{ k3s_fip }}:6443 --kubeconfig {{ ansible_user_dir }}/.kube/config