Only create aliases when not excluded in inventory

tasks/main.yml

@@ -11,6 +11,6 @@
     with_items: '{{ drupal_settings|default([]) }}'
     loop_control:
       loop_var: drupal
-    when: limit_site is not defined or drupal.id is not defined or limit_site == drupal.id
+    when: drupal.create_drush_aliases|default(true) and (limit_site is not defined or drupal.id is not defined or limit_site == drupal.id)
 
   when: '"drush" not in excluded_roles'