if you want to implement, then
1. create a subclass of PasswordHashingInterceptor  supporting the said hashing mechanism
2. package it as a jar and copy it to lib directory
3. go to the entry ads-interceptorId=passwordHashingInterceptor,ou=interceptors,ads-directoryServiceId=default,ou=config
4. change the value of ads-interceptorclassname to your new class's FQCN
5. restart the server
If you want to see an example implementation take a look at 
Are there any plans on implementing PKCS5S2 Password Hashing? If not can anyone provide me some pointers on how this can be implemented.