ApacheDS - cannot verify the quality of the non-cleartext passwords
You don't need to add a new attribute, you need to edit the server configuration and restart:
1-Open config.ldif in the server folder, search for the string:
ads-pwdcheckquality: 2
and change it to:
ads-pwdcheckquality: 0
2-After that, restart the server and try again. The solution worked for me.