This test triggers a stepdown that aborts a transaction, then checks that the cursor opened in the transaction was killed. It does so by running a getMore on that cursor in a transaction and checking for the CursorNotFound error code. There is no reason that the getMore needs to be done in a transaction, and this transaction occasionally aborts while trying to acquire the global lock. Since read-only transactions are not yet supported on secondaries, we should address the test failure by not running the getMore in a transaction.