Fix ansible syntax to avoid ansible deprecation warnings (#3512)

* failed

* version_compare

* succeeded

* skipped

* success

* version_compare becomes version since ansible 2.5

* ansible minimal version updated in doc and spec

* last version_compare

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

@@ -36,7 +36,7 @@
   when:
     - dns_mode in ['kubedns', 'dnsmasq_kubedns']
     - inventory_hostname == groups['kube-master'][0]
-    - rbac_enabled and kubedns_version|version_compare("1.11.0", "<", strict=True)
+    - rbac_enabled and kubedns_version is version("1.11.0", "<", strict=True)
   tags:
     - dnsmasq
     - kubedns

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

@@ -52,9 +52,9 @@
   when:
     - dns_mode != 'none'
     - inventory_hostname == groups['kube-master'][0]
-    - not item|skipped
+    - not item is skipped
   register: resource_result
-  until: resource_result|succeeded
+  until: resource_result is succeeded
   retries: 4
   delay: 5
   tags:

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

@@ -68,4 +68,4 @@
     filename: "{{kube_config_dir}}/{{item.item.file}}"
     state: "latest"
   with_items: "{{ manifests.results }}"
-  when: inventory_hostname == groups['kube-master'][0] and not item|skipped
+  when: inventory_hostname == groups['kube-master'][0] and not item is skipped