Make it clearer that user doesn't need to change password

We need some sort of plain-text password from which to generate
an NT hash.

src/middlewared/middlewared/plugins/account.py

@@ -718,7 +718,7 @@ def do_update(self, app, audit_callback, pk, data):
         if not user['smb'] and data.get('smb') and not data.get('password'):
             # Changing from non-smb user to smb user requires re-entering password.
             verrors.add('user_update.smb',
-                        'Password must be changed in order to enable SMB authentication')
+                        'Password must be reset in order to enable SMB authentication')
 
         verrors.check()