Issue with LDAP group resolving

[Jean-Daniel]

If you are reporting a problem, please make sure the following information are provided:

This is a follow up of #20038 which has been closed while still present.

Expected behavior and actual behavior:

LDAP group are not found because the query built by Harbor is invalid.

This is the debug log:

2024-10-01T21:11:58Z [DEBUG] [/pkg/ldap/ldap.go:347]: Groupname: , groupDN: cn=developers,ou=Groups,dc=example,dc=com
2024-10-01T21:11:59Z [DEBUG] [/pkg/ldap/ldap.go:259]: Search ldap with filter:(&(objectclass=groupOfNames)(cn=*))

For whatever reason, Harbor is building all group resolving query passing cn=* instead of keeping the real group DN, making the query returning 0 entries.

The LDAP record in OpenLDAP looks like this:

dn: cn=developers,ou=Groups,dc=example,dc=com
structuralObjectClass: groupOfNames
entryUUID: e426aa3a-acd2-1036-8978-df31319679d5
creatorsName: cn=admin,dc=example,dc=com
cn: developers
objectClass: groupOfNames

Versions:
Please specify the versions of following systems.

• harbor version: 2.11