Role to configure nextcloud with LDAP User backend.
First test passed.
New modules:
- occ:
set coniguration values using `php occ` nextcloud command-line tool.
- 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.