mattjmcnaughton f215096715 Add error path testing to image handling by kubeGenericRuntimeManager ...

In https://github.com/kubernetes/kubernetes/pull/88372, we added the
ability to inject errors to the `FakeImageService`. Use this ability to
test the error paths executed by the `kubeGenericRuntimeManager` when
underlying `ImageService` calls fail.

I don't foresee this change having a huge impact, but it should set a
good precedent for test coverage, and should the failure case behavior
become more "interesting" or risky in the future, we already will have
the scaffolding in place with which we can expand the tests.

2020-02-25 08:27:30 -05:00

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