autofs: Disable ssh authorized keys from users

When home directories are mounted using NFS and Kerberos the system
doesn't have access to authorized_keys file before user logs in.

roles/autofs/tasks/main.yml

@@ -47,3 +47,18 @@
     name: autofs
     state: started
     enabled: true
+
+- name: disable authorized_keys file from users
+  lineinfile:
+    path: /etc/ssh/sshd_config
+    line: AuthorizedKeysFile none
+    regexp: '^AuthorizedKeysFile\s+.*'
+  notify: restart sshd
+
+- name: enable authorized_keys file for root
+  blockinfile:
+    path: /etc/ssh/sshd_config
+    block: |
+      Match User root
+          AuthorizedKeysFile .ssh/authorized_keys
+  notify: restart sshd