[flaky test] API GET /exec/{id}/json got flaky test result

[allencloud]

Ⅰ. Issue Description

We met a flaky test in pr #1036, and this may be introduced in #875.

FAIL: /go/src/github.com/alibaba/pouch/test/api_container_exec_inspect_test.go:27: APIContainerExecInspectSuite.TestContainerExecInspectOk
/go/src/github.com/alibaba/pouch/test/api_container_exec_inspect_test.go:52:
    CheckRespStatus(c, resp, 200)
/go/src/github.com/alibaba/pouch/test/util_api.go:21:
    c.Assert(resp.StatusCode, check.Equals, status, check.Commentf("Error:%s", got.Message))
... obtained int = 404
... expected int = 200
... Error:

Ⅱ. Describe what happened

flaky test happens which is related to exec inspect API.

Ⅲ. Describe what you expected to happen

no flaky test

Ⅳ. How to reproduce it (as minimally and precisely as possible)

none

Ⅴ. Anything else we need to know?

Ⅵ. Environment:

• pouch version (use pouch version): master branch code
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

[allencloud]

Finally we found that this is not a flaky test. #1036 has some code issue there. Closing this.