koordetector: make koordetector run and compatible with different kernels

[songtao98]

Ⅰ. Describe what this PR does

This PR completes codes for koordetector to run with Dockerfile. The functionality of CPU schedule latency eBPF program is now available by this commit.

An eBPF CO-RE way is used to develop CSL collector. For developers' intention, you can follow belowing process to develop a eBPF program under koordetector's architecture:

• First, code your eBPF kernel program with a .c file. (e.g. pkg/koordetector/util/ebpf/cpu_schedule_latency/csl.bpf.c)
• Second, encapsulate this eBPF program with "github.com/cilium/ebpf" package and provide a go util(e.g. pkg/koordetector/util/cpu_schedule_latency/cpu_schedule_latency.go).
• Third, use go generate to compile and generate .o file for your eBPF program. Files in pkg/koordetector/util/ebpf/headers can be used for that.
• When koordetector runs, it finds vmlinux (by default in /sys/kernel/btf/vmlinux) file to re-location kernel information such as task_struct structure. If this fails (e.g. kernel < 5.2 does not has vmlinux in /sys/kernel/btf/vmlinux), the CSL collector will use vmlinux files in pkg/koordetector/util/ebpf/core.

For now, I added supporting vmlinux file of kernel vmlinux-4.19.91-27.4.al7.x86_64 in this PR. Vmlinux files for other kernels can be find in BTFhub, Anolis coolbpf or generate by pahole.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

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[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (f9d3faf) 33.70% compared to head (8f239d9) 33.70%.

Additional details and impacted files

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  Coverage   33.70%   33.70%           
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  Files           1        1           
  Lines          89       89           
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  Hits           30       30           
  Misses         58       58           
  Partials        1        1           

Flag	Coverage Δ
unittests	33.70% <ø> (ø)

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[zwzhang0107]

PTAL @zxustc @xueche

[zwzhang0107]

now we can consider import statesinformer pkg from koordlet directly?

[zwzhang0107]

use the MetricAdvisor from koordlet?