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/tokens/tasks/check-tokens.yml

@@ -2,6 +2,9 @@
 - name: "Check_tokens | check if the tokens have already been generated on first master"
   stat:
     path: "{{ kube_token_dir }}/known_tokens.csv"
+    get_attributes: no
+    get_checksum: yes
+    get_mime: no
   delegate_to: "{{ groups['kube-master'][0] }}"
   register: known_tokens_master
   run_once: true
@@ -20,6 +23,9 @@
 - name: "Check tokens | check if a cert already exists"
   stat:
     path: "{{ kube_token_dir }}/known_tokens.csv"
+    get_attributes: no
+    get_checksum: yes
+    get_mime: no
   register: known_tokens
 
 - name: "Check_tokens | Set 'sync_tokens' to true"