test: Add checkpoints for PouchRunBlkioSuite

[chuanchang]

Ⅰ. Describe what this PR did

Add new checkpoints and make sure cgroup setting is valid in inspect of container, configuration of host and the container.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)? (你真的觉得不需要加测试吗？)

Ⅳ. Describe how to verify it

$ go test -test.v -check.f PouchRunBlkioSuite
=== RUN Test
OK: 3 passed
--- PASS: Test (24.99s)
PASS
ok github.com/alibaba/pouch/test 25.103s

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2291 into master will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2291      +/-   ##
=========================================
+ Coverage   66.75%   66.8%   +0.04%     
=========================================
  Files         208     208              
  Lines       16971   16971              
=========================================
+ Hits        11329   11337       +8     
+ Misses       4275    4270       -5     
+ Partials     1367    1364       -3

Flag	Coverage Δ
#criv1alpha1test	32.56% <ø> (-0.03%)	⬇️
#criv1alpha2test	36.14% <ø> (-0.03%)	⬇️
#integrationtest	39.46% <ø> (-0.03%)	⬇️
#nodee2etest	33.46% <ø> (+0.18%)	⬆️
#unittest	23.75% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
daemon/mgr/snapshot.go	89.85% <0%> (-4.35%)	⬇️
cri/v1alpha2/cri_wrapper.go	61.2% <0%> (-1.2%)	⬇️
daemon/mgr/container.go	57.63% <0%> (+0.2%)	⬆️
cri/v1alpha2/cri_utils.go	90.57% <0%> (+0.28%)	⬆️
cri/v1alpha2/cri.go	66.76% <0%> (+0.58%)	⬆️
cri/ocicni/cni_manager.go	80% <0%> (+15%)	⬆️

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[fuweid]

basically, LGTM. But please rebase the commits into one 😄

[fuweid]

please check the error

test/cli_run_blkio_test.go:116:19: cannot refer to unexported name util.getMajMinNumOfDevice
test/cli_run_blkio_test.go:116:19: undefined: util.getMajMinNumOfDevice

[chuanchang]

@fuweid done, thanks for reviewing, and v2 patch is coming.

[fuweid]

LGTM