Patch Minitest to stop it hijacking exit codes.
Patch Minitest to stop it hijacking exit codes.

Minitest hijacks the exit code set by cucumber.
Minitest.autorun sets up a series of at_exit hooks that
interfere with it.

In certain circumstances, this will make `rake cucumber`
exit with 0 every time, making our build pass erroneously.

Since we don't use minitest in any capacity and it seems
to only be here to make life interesting - we're going to
patch it out.

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