Do not enforce the use of TLS for plain text authentication ONLY if
tls is not enabled for this LDAP instance.

- `hide_log` was used instead of `no_log`.

- password was set to literal `new_passwd.passwd` instead of the
  variable value.

- Tasks splitted in subfiles.
- Static slapd configuration (slapd.conf) moved *properly* to dynamic
conf (slapd.d).
- TLS Enabled by default, with certificate acquired using
  `ca_manager`.
- New default tree
- New default ACL
- Kerberos schema added
- {SSHA512} hash properly configured.