Replace 'yes' by 'true'

roles/basesecurity/tasks/main.yml

@@ -22,4 +22,4 @@
     - /usr/bin/chfn  # With re2o
     - /bin/mount  # Only root should mount
     - /bin/umount  # Only root should umount
-  ignore_errors: yes  # Sometimes file won't exist
+  ignore_errors: true  # Sometimes file won't exist

roles/codimd/tasks/1_user_group.yml

@@ -3,7 +3,7 @@
 - name: Create CodiMD system group
   group:
     name: codimd
-    system: yes
+    system: true
     state: present
 
 # Security #2
@@ -13,7 +13,7 @@
     group: codimd
     home: /var/local/codimd
     comment: CodiMD
-    system: yes
+    system: true
     state: present
 
 # Security #3

roles/etherpad/tasks/1_user_group.yml

@@ -3,7 +3,7 @@
 - name: Create EtherPad system group
   group:
     name: etherpad
-    system: yes
+    system: true
     state: present
 
 # Security #2
@@ -13,7 +13,7 @@
     group: etherpad
     home: /var/local/etherpad
     comment: EtherPad
-    system: yes
+    system: true
     state: present
 
 # Security #3

roles/ldap-replica/tasks/main.yml

@@ -51,7 +51,7 @@
     path: "{{ item }}"
     owner: openldap
     group: openldap
-    recurse: yes
+    recurse: true
   with_items:
     - '/var/lib/ldap'
     - '/etc/ldap/slapd.d'

roles/matrix-appservice-discord/tasks/1_user_group.yml

@@ -3,7 +3,7 @@
 - name: Create matrix-appservice-discord system group
   group:
     name: matrix-appservice-discord
-    system: yes
+    system: true
     state: present
 
 # Security #2
@@ -13,7 +13,7 @@
     group: matrix-appservice-discord
     home: /var/local/matrix-appservice-discord
     comment: Matrix Appservice Discord
-    system: yes
+    system: true
     state: present
 
 # Security #3

roles/matrix-appservice-irc/tasks/1_user_group.yml

@@ -3,7 +3,7 @@
 - name: Create matrix-appservice-irc system group
   group:
     name: matrix-appservice-irc
-    system: yes
+    system: true
     state: present
 
 # Security #2
@@ -13,7 +13,7 @@
     group: matrix-appservice-irc
     home: /var/local/matrix-appservice-irc
     comment: Matrix Appservice IRC
-    system: yes
+    system: true
     state: present
 
 # Security #3