Added jinja2 variable aur_helper

roles/arch_update/tasks/aur_rebuild.yaml

@@ -5,7 +5,7 @@
   register: aur_packages
 - name:  Rebuild AUR Python packages
   aur:
-    use:  pikaur
+    use:  "{{ aur_helper }}"
     name:  '{{ item }}'
     aur_only:  true
     extra_args:  --rebuild

roles/arch_update/tasks/aur_upgrade.yaml

@@ -1,7 +1,7 @@
 ---
 - name: AUR upgrade
   aur:
-    use: pikaur
+    use: "{{ aur_helper }}"
     upgrade: true
     aur_only: true