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>

roles/kubernetes/kubeadm/tasks/main.yml

@@ -13,11 +13,17 @@
 - name: Check if kubelet.conf exists
   stat:
     path: "{{ kube_config_dir }}/kubelet.conf"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kubelet_conf
 
 - name: Check if kubeadm CA cert is accessible
   stat:
     path: "{{ kube_cert_dir }}/ca.crt"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kubeadm_ca_stat
   delegate_to: "{{ groups['kube-master'][0] }}"
   run_once: true