Ticket 47376 - DESC should not be empty as per RFC 2252 (ldapv3)

Bug Description:  RFC 2252 (ldapv3), DESC, defined as a qdstring, should not
                  be an empty string.  In the standard schema there are
                  several attributes/objectclasses that have " DESC '' ",
                  which violates the RFC.

Fix Description:  Set all empty DESC's with values.

https://fedorahosted.org/389/ticket/47376

Reviewed by: richm & nkinder (Thanks!!)
(cherry picked from commit 9f73f01a408cef05f112f4ec406949f3d48afe78)
Coverity Fixes (Part 7)

11704 - Dereference after null check:  repl5_replica_config.c

https://bugzilla.redhat.com/show_bug.cgi?id=970221

Reviewed by: richm(Thanks!)
(cherry picked from commit a2cfcf7ff93bf2ef7a3cf4ad2ba2c4e0bd098a3a)