Increase sleep intervals to avoid test failures on slower/busy systems

Syncrepl does not currently support this configuration and the test only leads to false failures

Adds a regression test for 8663 that checks that it is possible to
modify all the cn=config related memberOf overlay settings.

Add a regression test for ITS#8616 that verifies the ability to change
the values for olcSpNoPresent and olcSpReloadHint

being logged to the underlying DB's contextCSN.

Fix variable usage so it doesn't delete data/slapd.conf after running

Ondřej Kuzník authored 7 years ago and Quanah Gibson-Mount committed 7 years ago

Make two successive modifications of the same attribute separate. This
lets the consumer interpret the log entry the same way as the server
that produced it.

Still depends on the log entry attributes being read in the same order
as they were written.