(ITS#6857) chain overlay change FLAGS of underlying database

Full_Name: Ralf Haferkamp Version: RE24, HEAD OS: URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (92.252.38.247)

The chain-overlay adds SLAP_DBFLAG_NOLASTMOD to the flags of the database for which chaining is to be configured. Example:

-------------------- database hdb suffix o=test rootdn o=test rootpw secret directory /tmp/ldap

overlay chain chain-return-error TRUE chain-uri ldap://ldap.server -------------------

With the above configuration slapd will no longer maintain the "modifyTimeStamp", "modifiersName", etc. Attributes for write operations to the "o=test" database anymore.

Note: This bug is only present when using a slapd.conf base configuration.

Fix is almost ready.