3227004-4.0.x: Value 0 as password passed the validation
3227004-4.0.x: Added PasswordNotZeroConstraint, PasswordNotZeroConstraintTest and updated _password_policy_user_profile_form_validate to validate when password is '0'.
Closes #3227004
3227004-4.0.x: Added PasswordNotZeroConstraint, PasswordNotZeroConstraintTest and updated _password_policy_user_profile_form_validate to validate when password is '0'.
Closes #3227004