openldap module

Introduce an OpenLDAP module to be used for managing openldap
Handles installation, configuration, replication and multi tree
hierarchies
Supports samba, rfc2307bis schema
TLS certificates
Indexes as in OIT LDAP opendj
Manage local ldap.conf to avoid non-TLS user initiated connections
Consumer only mode support
Mirrormode (dual master) support
Documentation

Change-Id: I017142971544bc66eae21563ad42d96a0a95771e
Merge "openldap module" into production