Description of problem:
        Account Policy plug-in entries fails to load for the ds8.2 to ds9.0
migrated instance.

Version-Release number of selected component (if applicable): DS9.0

How reproducible: Consistently

Steps to Reproduce:
1. Set the hostname of RHEL4/5(Source) machine to "mig_ds82".
2. Install DS8.2 on the source machine and create an instance.
3. Export all the db files to an ldif file using db2ldif command.
service dirsrv stop
service dirsrv-admin stop
for instdir in /var/lib/dirsrv/slapd-* ; do
    inst=`basename $instdir`
    for dbdir in /var/lib/dirsrv/$inst/db/* ; do
        if ! [ -d $dbdir ] ; then continue ; fi # skip non-directories
        dbname=`basename $dbdir`
        /usr/lib(64)/dirsrv/$inst/db2ldif -n $dbname -a
/var/lib/dirsrv/$inst/ldif/$dbname.upgrade.ldif
    done
done
4. Run the tar command to create a tar/zip file on the source machine.
  cd /
  tar cpjf /var/tmp/test_mig.tar.bz2 -C / --no-recursion --exclude httpd.conf
--exclude admserv.conf etc/sysconfig/dirsrv* etc/dirsrv/slapd-*
etc/dirsrv/slapd-*/* etc/dirsrv/slapd-*/schema/* var/run/dirsrv
var/lock/dirsrv/slapd-* var/log/dirsrv/slapd-* var/lib/dirsrv/slapd-*
var/lib/dirsrv/slapd-*/* var/lib/dirsrv/slapd-*/ldif
usr/lib(64)/dirsrv/slapd-*/* var/lib/dirsrv/slapd-*/ldif/*/*.ldif
5. Copy the tar file to RHEL6 machine and change the hostname of "Target"
machine to "mig_ds82".
6. Untar the "test_mig.tar.bz2" file on target machine.
    scp root@Source_IP:/var/tmp/test_mig.tar.bz2 /tmp/
    cd /
    tar cfjp /tmp/test_mig.tar.bz2
7. Copy the instance directory files if your migration is Cross-Arch.
     "cp -r /usr/lib(64)/dirsrv/slapd-*/ /usr/lib(64)/dirsrv/"
8. Create the dirsrv user/group at the "Target" machine as whom the DS was
running at "Source" machine and change the ownership for the dirsrv
directories.
     groupadd dsrel; useradd -g dsrel -s /bin/bash -d /export/svrbld -p redhat
svrbld
     for i in `find /usr /var /etc -name dirsrv`; do chown -R svrbld:dsrel $i;
done
9. Install DS9.0(389-ds-base) packages on the Target machine and run
"setup-ds.pl -u" to upgrade the instance and complete the migration.
        setup-ds.pl -u -s General.UpdateMode=offline
10. Restart the directory server instances. service dirsrv restart
11. Check whether the account policy plug-in entries are loaded.

/usr/bin/ldapmodify -x -h 10.16.98.241 -p 10389 -D "cn=Directory Manager" -w
Secret123 << EOF
> dn: cn=Account Policy Plugin,cn=plugins,cn=config
> changetype: modify
> replace: nsslapd-pluginEnabled
> nsslapd-pluginEnabled: on
> EOF

modifying entry "cn=Account Policy Plugin,cn=plugins,cn=config"
ldap_modify: No such object (32)

Actual results: Account Policy plug-in entries not loaded.

Expected results: Plug-in entries should be successfully loaded for the
migrated instances.