+++ This bug was initially created as a clone of Bug #2063033 +++

Description of problem:

After setting a backend referral using "dsconf inst1 backend suffix set --add-referral", 

setting the backend state to referral with "dsconf inst1 backend suffix set --state referral" returns an error  :
Error: 103 - 9 - 53 - Server is unwilling to perform - [] - need to set nsslapd-referral before moving to referral state 

Version-Release number of selected component (if applicable):
RHDS 12.0

How reproducible:
always

Steps to Reproduce:
Run these steps :
1. # dsconf inst1 backend suffix set --add-referral ldap://localhost:2389/dc=example,dc=com 'dc=example,dc=com'
The backend configuration was successfully updated
2. # dsconf inst1 backend suffix set --state referral userroot


Actual results:

Error: 103 - 9 - 53 - Server is unwilling to perform - [] - need to set nsslapd-referral before moving to referral state.

The suffix can't be configured with referral. 

Expected results:

Backend suffix state can be set to referral without error.

Additional info:

A workaround is to set nsslapd-referral in the mapping tree entry before running "dsconf inst1 backend suffix set --state referral" using ldapmodify :

# ldapmodify -D "cn=directory manager" -w secret12 -h localhost -p 1389 
dn: cn=dc\3Dexample\2Cdc\3Dcom,cn=mapping tree,cn=config
changetype: modify
add: nsslapd-referral
nsslapd-referral: ldap://localhost:2389/dc=example,dc=com

modifying entry "cn=dc\3Dexample\2Cdc\3Dcom,cn=mapping tree,cn=config"

# dsconf inst1 backend suffix set --state referral 'dc=example,dc=com'
The backend configuration was successfully updated