replace command by var with absolute path

os_vars/archlinux.yml

@@ -0,0 +1,2 @@
+commands:
+  - visudo: "/usr/bin/visudo"

os_vars/debian.yml

@@ -12,4 +12,7 @@ postgres_pkgs:
     - package: "postgresql"
     - package: "postgresql-contrib"
     - package: "python3-psycopg2"
-    - package: "sudo"
+    - package: "sudo"
+
+commands:
+  - visudo: "/usr/sbin/visudo"

os_vars/ubuntu.yml

@@ -12,4 +12,7 @@ postgres_pkgs:
     - package: "postgresql"
     - package: "postgresql-contrib"
     - package: "python3-psycopg2"
-    - package: "sudo"
+    - package: "sudo"
+
+commands:
+  - visudo: "/usr/sbin/visudo"

roles/server/tasks/utilities/snmpd.yml

@@ -12,7 +12,7 @@
     owner: "root"
     group: "root"
     mode: "0660"
-    validate: "visudo -cf %s"
+    validate: " {{ commands.visudo }} -cf %s"
   when: ansible_distribution in ["Debian", "Ubuntu"]
 
 - name: server | snmpd | create /etc/snmp