Re-enable benchmark CI step

[erthalion]

Description

Currently benchmark CI step is disabled. Turn it on with following changes:

• Use berserker instread of hackbench
• Use regular ttest instead of IQR
• Compare CPU/Memory usage instead of hackbench time

#run-benchmark

Checklist

• [ ] Investigated and inspected CI test results
• [ ] Updated documentation accordingly

Automated testing

• [ ] Added unit tests
• [ ] Added integration tests
• [ ] Added regression tests

If any of these don't apply, please comment below.

Testing Performed

Manual testing.

[github-actions[bot]]

VM	Method	Baseline CPU median (%)	Test CPU median (%)	CPU P-value
rhel.rhel-8	core-bpf	32.38	34.44	:green_circle:
rhel.rhel-8	ebpf	24.56	24.95	:green_circle:
rhel.rhel-9	core-bpf	42.4	42.63	:green_circle:
rhel.rhel-9	ebpf	22.88	66.97	:red_circle:
ubuntu-os.ubuntu-2004-lts	core-bpf	45.59	44.06	:green_circle:
ubuntu-os.ubuntu-2004-lts	ebpf	32.02	35.28	:green_circle:
ubuntu-os.ubuntu-2204-lts	core-bpf	46.82	43.67	:green_circle:
ubuntu-os.ubuntu-2204-lts	ebpf	34.22	33.38	:green_circle:

---

VM	Method	Baseline Memory median (MiB)	Test Memory median (MiB)	Memory P-value
rhel.rhel-8	core-bpf	48.55	47.1	:green_circle:
rhel.rhel-8	ebpf	30.52	34.68	:green_circle:
rhel.rhel-9	core-bpf	51.94	50.92	:green_circle:
rhel.rhel-9	ebpf	36.18	94.13	:red_circle:
ubuntu-os.ubuntu-2004-lts	core-bpf	51.07	49.66	:green_circle:
ubuntu-os.ubuntu-2004-lts	ebpf	29.23	29.51	:green_circle:
ubuntu-os.ubuntu-2204-lts	core-bpf	53.07	52.54	:green_circle:
ubuntu-os.ubuntu-2204-lts	ebpf	30.52	29.44	:green_circle:

[Stringy]

Just a heads up on the socat integration test failures - the socat image is using alpine:latest which pulls in a new version of socat that seems to consistently fail (I've not looked into precisely what's wrong with it) but we can pin the image to alpine:3.18.4 to stick with the old and working version.

I had to do this in the syscall latency branch as well: https://github.com/stackrox/collector/pull/1640/commits/65cf13545a4bcdb1225448672b9c9ae195286c6f