Fix bug from copy-paste

library/mysql_user

@@ -298,7 +298,7 @@ def main():
             login_password = ""
         else:
             login_user = mycnf_creds["user"]
-            login_password = mycnf_creds["password"]
+            login_password = mycnf_creds["passwd"]
     elif login_password is None or login_user is None:
         module.fail_json(msg="when supplying login arguments, both login_user and login_password must be provided")