When creating a user with the --password-prompt option, a warning is
incorrectly displayed stating that no password was supplied, even though
a password was entered. This occurs because the code checks parsed_args.password
instead of the password variable that actually stores the prompted password.
This patch fixes the issue by checking the 'password' variable
instead of 'parsed_args.password' in the warning condition. A test
case has been added to verify that no warning is displayed when
using --password-prompt and entering a password.
Closes-Bug: #2091836
Change-Id: Ib3ddc7e400ee7988f605c00db534bccc3617d982