test: move required test support files locally

[grahamwhaley]

Rather than have some of our required test support files live in /tmp, let's install them in a local dir instead.

[grahamwhaley]

Marked as DNM so we can discuss (so really an RFC).

• the make check works as before
• the go test -bench=. gives the same results as before (see below)

I didn't realise we had some benchmarks ;-) I managed to run them with:

$ sudo -E env PATH="$PATH" go test -bench=.

It looks like we may have bitrotted though (as I suspect nobody runs these). The output I have from both the original and the modified-in-this-patch I get is:

Some output on stderrERRO[0004] hook error                                    arch=amd64 error="exit status 1: stdout: , stderr: " hook-type=pre-start source=virtcontainers subsystem=hooks
Some output on stderrBenchmarkCreateStartStopDeletePodQemuHypervisorHyperstartAgentNetworkCNI-4              2         699418793 ns/op
BenchmarkCreateStartStopDeletePodQemuHypervisorNoopAgentNetworkCNI-4                   2      552637127 ns/op
BenchmarkCreateStartStopDeletePodQemuHypervisorHyperstartAgentNetworkNoop-4            3      532006579 ns/op
BenchmarkCreateStartStopDeletePodQemuHypervisorNoopAgentNetworkNoop-4                 10      251059396 ns/op
BenchmarkCreateStartStopDeletePodMockHypervisorNoopAgentNetworkNoop-4                500        4059463 ns/op
BenchmarkStartStop1ContainerQemuHypervisorHyperstartAgentNetworkNoop-4                 2     1117480785 ns/op
BenchmarkStartStop10ContainerQemuHypervisorHyperstartAgentNetworkNoop-4                1     6304859774 ns/op
PASS
ok      github.com/containers/virtcontainers    27.195s

@sboeuf - something you think we should fix? Any idea how?

[sboeuf]

LGTM