cups: printers.conf changes too often; ignore it

roles/printscan/tasks/main.yml

@@ -10,6 +10,13 @@
     msg: printer and scanner
 ### ⇐ UPSTREAM BEGIN ###
 
+- name: ignore printers.conf, which almost changes on a daily basis
+  lineinfile:
+    path: /etc/.gitignore
+    regexp: "^/cups/printers.conf"
+    line: "/cups/printers.conf*"
+    insertafter: EOF
+
 - name: install software
   package:
     name: "{{item}}"