Purge legacy cleanup tasks from older than 1 year (#4450)

We don't need to support upgrades from 2 year old installs,
just from the last major version.

Also changed most retried tasks to 1s delay instead of longer.

roles/kubernetes-apps/ansible/tasks/cleanup_dns.yml

@@ -1,31 +1,4 @@
 ---
-- name: Kubernetes Apps | Delete old CoreDNS resources
-  kube:
-    name: "coredns"
-    namespace: "kube-system"
-    kubectl: "{{ bin_dir }}/kubectl"
-    resource: "{{ item }}"
-    state: absent
-  with_items:
-    - 'deploy'
-    - 'configmap'
-    - 'svc'
-  tags:
-    - upgrade
-
-- name: Kubernetes Apps | Delete old nodelocalDNS resources
-  kube:
-    name: "nodelocaldns"
-    namespace: "kube-system"
-    kubectl: "{{ bin_dir }}/kubectl"
-    resource: "{{ item }}"
-    state: absent
-  with_items:
-    - 'deamonset'
-    - 'configmap'
-  tags:
-    - upgrade
-
 - name: Kubernetes Apps | Delete kubeadm CoreDNS
   kube:
     name: "coredns"
@@ -37,41 +10,3 @@
     - kubeadm_init is defined
     - kubeadm_init.changed|default(false)
     - inventory_hostname == groups['kube-master'][0]
-
-- name: Kubernetes Apps | Delete old KubeDNS resources
-  kube:
-    name: "kube-dns"
-    namespace: "kube-system"
-    kubectl: "{{ bin_dir }}/kubectl"
-    resource: "{{ item }}"
-    state: absent
-  with_items:
-    - 'deploy'
-    - 'svc'
-  tags:
-    - upgrade
-
-- name: Kubernetes Apps | Delete kubeadm KubeDNS
-  kube:
-    name: "kube-dns"
-    namespace: "kube-system"
-    kubectl: "{{ bin_dir }}/kubectl"
-    resource: "{{ item }}"
-    state: absent
-  with_items:
-    - 'deploy'
-    - 'svc'
-  when:
-    - kubeadm_init is defined
-    - kubeadm_init.changed|default(false)
-    - inventory_hostname == groups['kube-master'][0]
-
-- name: Kubernetes Apps | Delete old KubeDNS Autoscaler deployment
-  kube:
-    name: "kubedns-autoscaler"
-    namespace: "kube-system"
-    kubectl: "{{ bin_dir }}/kubectl"
-    resource: "deploy"
-    state: absent
-  tags:
-    - upgrade