LDAP database reindexing

In some very rare case, you will encounter some LDAP database entries that are not indexed and used during searches. In that case, OpenLDAP will output warnings to notify you that they should be.

LDAP database reindexing. 

# Stop OpenLDAP
service rudder-slapd stop

# Reindex the databases
service rudder-slapd reindex

# Restart OpenLDAP
service rudder-slapd restart