Make tests for group membership more readable

roles/lmn_vm/tasks/main.yml

@@ -60,7 +60,7 @@
         ><not><or><user>root</user><user>ansible</user><user>Debian-gdm</user><user>sddm</user><user>{{ localuser }}</user></or></not>
       </volume>
     insertafter: "<!-- END ANSIBLE MANAGED BLOCK .* -->"
-  when: groups.localhome is defined and inventory_hostname in groups.localhome
+  when: "'localhome' in group_names"
 
 - name: Use umount script for proper cleanup
   blockinfile: