test: complete criu test

[Ace-Tang]

criu test is not completed, we should check criu image files have
been dumped, and restored container has the specified process

Signed-off-by: Ace-Tang [email protected]

Ⅰ. Describe what this PR did

I have no idea whether criu test have broken, so I complete the criu test to check

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

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2520 into master will increase coverage by 0.09%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2520      +/-   ##
==========================================
+ Coverage   69.03%   69.12%   +0.09%     
==========================================
  Files         278      278              
  Lines       18454    18454              
==========================================
+ Hits        12739    12756      +17     
+ Misses       4256     4250       -6     
+ Partials     1459     1448      -11

Flag	Coverage Δ
#criv1alpha1test	31.39% <ø> (+0.2%)	⬆️
#criv1alpha2test	35.38% <ø> (-0.05%)	⬇️
#integrationtest	40.31% <ø> (-0.09%)	⬇️
#nodee2etest	32.86% <ø> (+0.16%)	⬆️
#unittest	26.72% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
daemon/mgr/snapshot.go	89.85% <0%> (-4.35%)	⬇️
ctrd/watch.go	80.28% <0%> (-4.23%)	⬇️
pkg/streams/utils.go	89.28% <0%> (-2.39%)	⬇️
daemon/logger/jsonfile/utils.go	71.54% <0%> (-1.63%)	⬇️
daemon/mgr/system.go	71.75% <0%> (-1.53%)	⬇️
daemon/mgr/container.go	58.04% <0%> (+0.42%)	⬆️
cri/v1alpha1/cri.go	60.92% <0%> (+0.66%)	⬆️
ctrd/container.go	58.89% <0%> (+0.79%)	⬆️
cri/v1alpha2/cri.go	70.06% <0%> (+0.88%)	⬆️
daemon/mgr/container_utils.go	86.7% <0%> (+1.26%)	⬆️
... and 2 more