Do not use ‘yes/no’ for boolean values (#11472)

Consistent boolean values in ansible playbooks

roles/bootstrap-os/tasks/redhat.yml

@@ -87,9 +87,9 @@
 - name: Check presence of fastestmirror.conf
   stat:
     path: /etc/yum/pluginconf.d/fastestmirror.conf
-    get_attributes: no
-    get_checksum: no
-    get_mime: no
+    get_attributes: false
+    get_checksum: false
+    get_mime: false
   register: fastestmirror
 
 # the fastestmirror plugin can actually slow down Ansible deployments