Only use stat get_checksum: yes when needed (#7270)

By default Ansible stat module compute checksum, list extended attributes and find mime type
To find all stat invocations that really use one of those:
git grep -F stat. | grep -vE 'stat.(islnk|exists|lnk_source|writeable)'

Signed-off-by: Etienne Champetier <e.champetier@ateme.com>
(cherry picked from commit de1d9df787)

Conflicts:
	roles/etcd/tasks/check_certs.yml

roles/kubernetes/preinstall/handlers/main.yml

@@ -50,13 +50,21 @@
 
 # FIXME(mattymo): Also restart for kubeadm mode
 - name: Preinstall | kube-apiserver configured
-  stat: path="{{ kube_manifest_dir }}/kube-apiserver.manifest"
+  stat:
+    path: "{{ kube_manifest_dir }}/kube-apiserver.manifest"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kube_apiserver_set
   when: inventory_hostname in groups['kube-master'] and dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'
 
 # FIXME(mattymo): Also restart for kubeadm mode
 - name: Preinstall | kube-controller configured
-  stat: path="{{ kube_manifest_dir }}/kube-controller-manager.manifest"
+  stat:
+    path: "{{ kube_manifest_dir }}/kube-controller-manager.manifest"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kube_controller_set
   when: inventory_hostname in groups['kube-master'] and dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'