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/node/tasks/loadbalancer/haproxy.yml

@@ -22,6 +22,9 @@
 - name: haproxy | Get checksum from config
   stat:
     path: "{{ haproxy_config_dir }}/haproxy.cfg"
+    get_attributes: no
+    get_checksum: yes
+    get_mime: no
   register: haproxy_stat
 
 - name: haproxy | Write static pod

roles/kubernetes/node/tasks/loadbalancer/nginx-proxy.yml

@@ -22,6 +22,9 @@
 - name: nginx-proxy | Get checksum from config
   stat:
     path: "{{ nginx_config_dir }}/nginx.conf"
+    get_attributes: no
+    get_checksum: yes
+    get_mime: no
   register: nginx_stat
 
 - name: nginx-proxy | Write static pod