Description of problem:
With 5.7.0.9-beta2, copying a built-in role such as EvmRole-vm_user produces two errors:

"Password can't be blank" and "Userid can't be blank"

These seem to be invalid errors for the operation

Version-Release number of selected component (if applicable):
5.7.0.9-beta2

How reproducible:
Every time


Steps to Reproduce:
1. Navigate to Configuration -> Access Control
2. Select an existing role, click Configuration -> Copy this role to a new role
3. Give the new role a name and click 'Add'

Actual results:


Expected results:


Additional info: