Ticket #47523 - Set up replcation/agreement before initializing the sub suffix, the sub suffix is not found by ldapsearch
Bug description: If a replication is configured against a backend
before initializing the backend with a suffix entry, an RUV entry
is inserted first with the entryid 1. The RUV entry's entryrdn is
added to the entryrdn index with a suffix entry which is a parent
entry of the RUV entry having a temporary entryid 0, which was to
be replaced with the real entryid when the real suffix entry is
added. But the replacement code was not executed.
Fix description: When a real suffix is added to the entryrdn index,
it returns DB_KEYEXIST, which used to be ignored by resetting 0
(== SUCCESS). This patch returns DB_KEYEXIST to the caller and let
_entryrdn_insert_key use the info to replace the temporary entryid
with the real one. The error code is ignored by the other callers.
https://fedorahosted.org/389/ticket/47523
Reviewed by nkinder (Thanks!).
(cherry picked from commit e6eab21920a0374eb356da3d1f041312c6857ecd)
(cherry picked from commit 6b35dc7b04da023cc14045cc6dd1f5e304cf265f)