Dicts in parent group merges with dicts in child groups.
Warning! Playbook will delete all public keys and setup own **super** key, only after this public keys in group_vars will be added into users authorized_keys files.
Warning! Playbook will delete all public keys in root's ```.ssh/authorized_keys``` file and setup own **super** key, only after this public keys in group_vars and host_vars will be added into assigned users ```.ssh/authorized_keys``` files.
**Security issue!** You need to generate your own super key! Run ```ssh-keygen -f superkey``` and replace keys in ```secret/``` directory.
