nfs-client: fix formatting

nfs-client/tasks/main.yml

@@ -58,7 +58,10 @@
     - nfs-client
 
 - name: ensure we use the idmapper
-  shell: echo "N" > /sys/module/nfs/parameters/nfs4_disable_idmapping
+  copy:
+    content: "N"
+    dest: /sys/module/nfs/parameters/nfs4_disable_idmapping
+    unsafe_writes: true
   notify:
     - restart nfs-client
     - restart autofs