Removed mode parameter as it should be automatically handled by the module

Ansible/lxc_setup_ubuntu.yml

@@ -23,7 +23,6 @@
         key: "{{ item }}"
         state: present
         path: /home/{{ target_user }}/.ssh/authorized_keys
-        mode: '0600'
       loop: "{{ my_public_keys }}"
       # ansible.posix.authorized_key will create an .ssh directory with the correct permissions.