Check if olcSyncRepl and olcMirrorMode attributes exist before
deciding whether to use 'add' or 'replace' operation. Previously
the script always used 'replace' which fails on first-time setup
when the attributes don't exist yet.
- Add syncprov module to init-config.sh
- Create init-replication.sh for configuring N-way multi-master
- Update entrypoint to handle replication configuration
- Support LDAP_REPLICATION_ENABLED, LDAP_SERVER_ID, LDAP_REPLICATION_HOSTS
- Replica servers can sync DIT from existing masters