fix: failed to get correct cgroup path in test

[Ace-Tang]

runc get cgroup parent through /proc/self/cgroup, so can not get cgroup path just
join string like "/sys/fs/cgroup"+"subsystem"+"cgroup-parent"+"containerid", get corrent
cgroup path from /proc/self/cgroup in test.

fixes: #2685

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

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

fixes: #2685

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 #2688 into master will increase coverage by 4.36%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2688      +/-   ##
=========================================
+ Coverage   63.03%   67.4%   +4.36%     
=========================================
  Files         276     278       +2     
  Lines       17356   17387      +31     
=========================================
+ Hits        10941   11720     +779     
+ Misses       5206    4386     -820     
- Partials     1209    1281      +72

Flag	Coverage Δ
#criv1alpha2_test	39.29% <ø> (?)
#integration_test_0	36.45% <ø> (ø)	⬆️
#integration_test_2	36.62% <ø> (ø)	⬆️
#integration_test_3	35.12% <ø> (?)
#node_e2e_test	35.12% <ø> (+0.02%)	⬆️
#unittest	27.37% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
cri/ocicni/cni_manager.go	58.82% <0%> (-11.77%)	⬇️
daemon/mgr/spec_apparmor_linux.go	20% <0%> (ø)
daemon/mgr/spec_seccomp_linux.go	71.42% <0%> (ø)
daemon/mgr/container_stats.go	71.83% <0%> (+1.14%)	⬆️
apis/server/router.go	90.74% <0%> (+1.23%)	⬆️
daemon/mgr/system.go	74.8% <0%> (+1.52%)	⬆️
pkg/meta/store.go	68.99% <0%> (+1.55%)	⬆️
ctrd/client.go	65.73% <0%> (+1.68%)	⬆️
daemon/mgr/container_utils.go	85.11% <0%> (+1.78%)	⬆️
daemon/containerio/io.go	72.81% <0%> (+1.94%)	⬆️
... and 41 more

[Ace-Tang]

FAIL: z_cli_daemon_test.go:478: PouchDaemonSuite.TestRestartStoppedContainerAfterDaemonRestart
z_cli_daemon_test.go:516:
    res.Assert(c, icmd.Success)
/home/travis/gopath/src/github.com/alibaba/pouch/vendor/github.com/gotestyourself/gotestyourself/icmd/command.go:61:
    t.Fatalf("at %s:%d - %s\n", filepath.Base(file), line, err.Error())
... Error: at z_cli_daemon_test.go:516 - 
Command:  /usr/local/bin/pouch --host unix:///tmp/test/pouch/pouchd.sock start -a PouchDaemonSuite.TestRestartStoppedContainerAfterDaemonRestart
ExitCode: 1
Error:    exit status 1
Stdout:   
Stderr:   Error: failed to start container PouchDaemonSuite.TestRestartStoppedContainerAfterDaemonRestart: {"message":"failed to create container(7d4d5fc514ae18d734d19713e6afb7add1c40f9b6faaeaed381f244ba0a0152b) on containerd: failed to create container 7d4d5fc514ae18d734d19713e6afb7add1c40f9b6faaeaed381f244ba0a0152b: container \"7d4d5fc514ae18d734d19713e6afb7add1c40f9b6faaeaed381f244ba0a0152b\": already exists: already existed"}

Seems not related with my modify

[Ace-Tang]

hack/install/install_nsenter.sh
>>>> install nsenter-2.24.1 <<<<
--2019-01-23 13:20:39--  https://pouch-oss.oss-cn-beijing.aliyuncs.com/pouch-test/ubuntu/nsenter-2.24.1
Resolving pouch-oss.oss-cn-beijing.aliyuncs.com (pouch-oss.oss-cn-beijing.aliyuncs.com)... 59.110.190.36, 59.110.190.32
Connecting to pouch-oss.oss-cn-beijing.aliyuncs.com (pouch-oss.oss-cn-beijing.aliyuncs.com)|59.110.190.36|:443... connected.

oss network connect down

[HusterWan]

LGTM

[HusterWan]

FAIL: z_cli_daemon_test.go:478: PouchDaemonSuite.TestRestartStoppedContainerAfterDaemonRestart
z_cli_daemon_test.go:516:
    res.Assert(c, icmd.Success)
/home/travis/gopath/src/github.com/alibaba/pouch/vendor/github.com/gotestyourself/gotestyourself/icmd/command.go:61:
    t.Fatalf("at %s:%d - %s\n", filepath.Base(file), line, err.Error())
... Error: at z_cli_daemon_test.go:516 - 
Command:  /usr/local/bin/pouch --host unix:///tmp/test/pouch/pouchd.sock start -a PouchDaemonSuite.TestRestartStoppedContainerAfterDaemonRestart
ExitCode: 1
Error:    exit status 1
Stdout:   
Stderr:   Error: failed to start container PouchDaemonSuite.TestRestartStoppedContainerAfterDaemonRestart: {"message":"failed to create container(7d4d5fc514ae18d734d19713e6afb7add1c40f9b6faaeaed381f244ba0a0152b) on containerd: failed to create container 7d4d5fc514ae18d734d19713e6afb7add1c40f9b6faaeaed381f244ba0a0152b: container \"7d4d5fc514ae18d734d19713e6afb7add1c40f9b6faaeaed381f244ba0a0152b\": already exists: already existed"}

Seems not related with my modify

Since this case is nothing to do with this PR, so I think we can merge this PR first.

[fuweid]

LGTM