implement test 2: local service not impacted

[nojnhuh]

This PR adds tests to ensure unexported services still behave as expected in the presence of exported ones as described in #16.

Closes #16

[jackfrancis]

@skitt could you kindly give this a review?

[nojnhuh]

/hold for squash (if that's desired)

[skitt]

Thanks! Do please squash these, without even waiting for other reviews — I think the overall result is now easier to review than the individual commits. While you’re at it, if you don’t mind, there are a few stout typos instead of stdout :wink:.

[skitt]

/lgtm

[skitt]

/assign @JeremyOT

[skitt]

/hold cancel /approve

[k8s-ci-robot]

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