Required consul keys:
- jabber/dhparams
- jabber/<domain>/enabled
- ldap/admin/password
- letsencrypt/lists.<domain>/email
- letsencrypt/lists.<domain>/provider
- letsencrypt/lists.<domain>/token
- letsencrypt/lists.<domain>/upstream
- letsencrypt/lists.<domain>/upstream_type
- letsencrypt/mail.<domain>/email
- letsencrypt/mail.<domain>/provider
- letsencrypt/mail.<domain>/token
- letsencrypt/mail.<domain>/upstream
- letsencrypt/mail.<domain>/upstream_type
- letsencrypt/<domain>/email
- letsencrypt/<domain>/provider
- letsencrypt/<domain>/token
- letsencrypt/<domain>/upstream
- letsencrypt/<domain>/upstream_type
- mail/domain
- mail/dkim/key