The add-user script prompt says the requirements for a password will be listed, but nothing is listed.

What type of user do you wish to add?
a) Management User (mgmt-users.properties)
b) Application User (application-users.properties)
(a): a

Enter the details of the new user to add.
Using realm 'ManagementRealm' as discovered from the existing property files.
Username : bstansberry
Password requirements are listed below. To modify these restrictions edit the add-user.properties configuration file.
Password :

If there are no requirements, then some placeholder requirement like <no restrictions on password format> should be output.

It seems there is at least a non-null/empty requirement, as I just created a user with 'b' as the password, but no password at all failed. So that requirement should be reported.