Added retries in pre-upgrade.yml and retries while applying kube-dns.yml (#2553)

* Added retries in pre-upgrade.yml and retries while applying kube-dns.yml

* Removed trailing spaces

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

@@ -50,6 +50,10 @@
     - dns_mode != 'none'
     - inventory_hostname == groups['kube-master'][0]
     - not item|skipped
+  register: resource_result
+  until: resource_result|succeeded
+  retries: 4
+  delay: 5
   tags:
     - dnsmasq
 

roles/kubernetes/master/tasks/pre-upgrade.yml

@@ -30,4 +30,7 @@
   with_items:
     - ["kube-apiserver", "kube-controller-manager", "kube-scheduler"]
   when: kube_apiserver_manifest_replaced.changed
-  run_once: true
+  register: remove_master_container
+  retries: 4
+  until: remove_master_container.rc == 0
+  delay: 5