Ticket #446 - anonymous limits are being applied to directory manager
Bug Description: If you set "anonymous limits" they are incorrectly applied
to the root DN
Fix Description: When a connection is first accepted we set the anonymous limits
before we process the bind, because there might not be a bind operation.
However, we fail to clear out the resouce limits if the bind DN is
the root dn.
https://fedorahosted.org/389/ticket/446
Reviewed by: richm(Thanks!)
(cherry picked from commit 53e16eda8e2a82a45deb39129bbe839beb036c70)