Added backup for configuration files

roles/native-sshd/tasks/main.yml

@@ -1,3 +1,6 @@
-- name: configuring ssh
+- name: create sshd_config
-  template: src=sshd_config dest=/etc/ssh/
+  copy:
+    src:  sshd_config
+    dest: /etc/ssh/sshd_config
+    backup: yes
   notify: sshd restart

roles/native-sudo/tasks/main.yml

@@ -8,3 +8,4 @@
     mode: "0440"
     owner: root
     group: root
+    backup: yes