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/bootstrap-os/tasks/bootstrap-centos.yml

@@ -69,6 +69,9 @@
 - name: Check presence of fastestmirror.conf
   stat:
     path: /etc/yum/pluginconf.d/fastestmirror.conf
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: fastestmirror
 
 # the fastestmirror plugin can actually slow down Ansible deployments

roles/bootstrap-os/tasks/bootstrap-opensuse.yml

@@ -4,6 +4,9 @@
 - name: Check that /etc/sysconfig/proxy file exists
   stat:
     path: /etc/sysconfig/proxy
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: stat_result
 
 - name: Create the /etc/sysconfig/proxy empty file

roles/bootstrap-os/tasks/bootstrap-redhat.yml

@@ -85,6 +85,9 @@
 - name: Check presence of fastestmirror.conf
   stat:
     path: /etc/yum/pluginconf.d/fastestmirror.conf
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: fastestmirror
 
 # the fastestmirror plugin can actually slow down Ansible deployments