'secret' role starts to depend on 'encfs' role

This is a change from "cryptsetup"-based storage to "encfs"-based, which
will destroy your current secret storage. You should first copy the
contents of the 'secret' directory out to a separate directory and
either move the old storage files to a different location, or change the
'secret' directory path to a new one.

After that, you can create a new storage space by running command:

    ansible-playbook -i inventory playbooks/secret.yml

'encfs' role will create new set of storage directories and mount them.
You can put your old secret data in the new encrypted directory, and run
the above command again to close it. After that, when you run
'./site.sh' script, Ansible should correctly use the new 'encfs' role to
open and close secret storage.