test: skip test cgroup parent when use cgroup ns

[Ace-Tang]

in ##2688, I make a mistake to find container cgroup path, since when
containeruse cgroup namespace, we can not get cgroup path from container
withexec cat proc/self/cgroups. Skip some test if container use cgroup
namespace.

fixes: #2685

Signed-off-by: Ace-Tang aceapril@126.com

Ⅰ. Describe what this PR did

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 #2693 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2693      +/-   ##
==========================================
+ Coverage   69.26%   69.27%   +0.01%     
==========================================
  Files         278      278              
  Lines       17392    17392              
==========================================
+ Hits        12047    12049       +2     
+ Misses       4021     4019       -2     
  Partials     1324     1324

Flag	Coverage Δ
#criv1alpha2_test	39.25% <ø> (-0.12%)	⬇️
#integration_test_0	36.24% <ø> (+0.01%)	⬆️
#integration_test_1	35.13% <ø> (-0.09%)	⬇️
#integration_test_2	36.33% <ø> (ø)	⬆️
#integration_test_3	35.16% <ø> (ø)	⬆️
#node_e2e_test	35.18% <ø> (+0.04%)	⬆️
#unittest	27.36% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
ctrd/container.go	56.89% <0%> (-0.77%)	⬇️
daemon/mgr/container.go	59.03% <0%> (-0.22%)	⬇️
cri/v1alpha2/cri.go	72.13% <0%> (+0.49%)	⬆️
daemon/logger/jsonfile/utils.go	73.17% <0%> (+1.62%)	⬆️
apis/server/utils.go	75% <0%> (+3.84%)	⬆️

[rudyfly]

LGTM