added task to backup .bashrc to .bashrc.old

tasks/users.yml

@@ -11,6 +11,14 @@
     group: root
     mode: 0440
 
+- name: create backup of .bashrc
+  copy:
+    src: /home/robert/.bashrc
+    dest: /home/robert/.bashrc.old
+    owner: robert
+    group: robert
+    mode: 0600
+
 - name: copy .bashrc to server
   copy:
     src: files/bashrc