[PATCH v3 1/2] tests: unify common code in prctl decoder tests

[Srikavin Ramkumar]

On Sun Jun 6, 2021 at 10:47 AM EDT, Dmitry V. Levin wrote:
> Overall this looks almost ready, but I have a question:
> could we extend this approach to prctl-seccomp-filter-v.test,
> prctl-seccomp-strict.test, and maybe even getuid.test?
>

I'll update the prctl-spec-inject, prctl-seccomp-strict, and prctl-seccomp-filter-v
tests to also use this approach. I'll add another commit for getuid.test-based 
tests and update the commit message for v4.