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

Consistent boolean values in ansible playbooks

contrib/network-storage/glusterfs/roles/glusterfs/client/defaults/main.yml

@@ -1,7 +1,7 @@
 ---
 # For Ubuntu.
 glusterfs_default_release: ""
-glusterfs_ppa_use: yes
+glusterfs_ppa_use: true
 glusterfs_ppa_version: "4.1"
 
 # Gluster configuration.

contrib/network-storage/glusterfs/roles/glusterfs/client/tasks/setup-Debian.yml

@@ -3,7 +3,7 @@
   apt_repository:
     repo: 'ppa:gluster/glusterfs-{{ glusterfs_ppa_version }}'
     state: present
-    update_cache: yes
+    update_cache: true
   register: glusterfs_ppa_added
   when: glusterfs_ppa_use