add kprobe read/write e2e test

[sat0ken]

Fixes #230

Description

I wrote test code use e2e test framework about kprobe/kretprobe test (read/write a file).

[olsajiri]

cc @will-isovalent @kkourt

[will-isovalent]

Thanks for the PR. I think it's fine to add a kprobe e2e test, although there have been some reliability issues with e2e testing, as @kkourt described. Something I think we are looking to do in the future is maybe move e2e tests to a weekly cron rather than per-PR so that we can still get a signal from them without the noise introduced by flaky infrastructure. I don't see a reason not to merge this in the mean time.

Note, however, your test currently seems to be broken on the Ubuntu runners.

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[kkourt]

Marking this as a draft. Please undraft once ready for reviews.