fix: make container state in inpsect API correct

[allencloud]

Signed-off-by: Allen Sun allensun.shl@alibaba-inc.com

Ⅰ. Describe what this PR did

like #2255 mentioned, inspect API should return pid of exit process. Also it will show lots of fields without ignoring them, like:

        "State": {
            "Dead": false,
            "Error": "",
            "ExitCode": 143,
            "FinishedAt": "2018-09-19T10:41:37.070677153Z",
            "OOMKilled": false,
            "Paused": false,
            "Pid": 0,
            "Restarting": false,
            "Running": false,
            "StartedAt": "2018-09-19T10:41:29.770644983Z",
            "Status": "stopped"
        },

Ⅱ. Does this pull request fix one issue?

link #2255

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

added

Ⅳ. Describe how to verify it

none

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2256 into master will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2256      +/-   ##
==========================================
- Coverage   66.84%   66.77%   -0.08%     
==========================================
  Files         208      208              
  Lines       16926    16926              
==========================================
- Hits        11314    11302      -12     
- Misses       4256     4262       +6     
- Partials     1356     1362       +6

Flag	Coverage Δ
#criv1alpha1test	32.53% <ø> (-0.19%)	⬇️
#criv1alpha2test	36.05% <ø> (+0.07%)	⬆️
#integrationtest	39.54% <ø> (+0.04%)	⬆️
#nodee2etest	33.45% <ø> (-0.05%)	⬇️
#unittest	23.75% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
ctrd/watch.go	75.75% <0%> (-4.55%)	⬇️
daemon/containerio/cri_log_file.go	84.31% <0%> (-3.93%)	⬇️
daemon/mgr/system.go	76.22% <0%> (-1.64%)	⬇️
daemon/mgr/spec_linux.go	74.47% <0%> (-1.51%)	⬇️
cri/v1alpha2/cri_wrapper.go	61.2% <0%> (-1.2%)	⬇️
cri/v1alpha2/cri.go	66.76% <0%> (-0.6%)	⬇️
cri/v1alpha1/cri.go	61.52% <0%> (-0.34%)	⬇️
daemon/mgr/container.go	57.39% <0%> (-0.21%)	⬇️
ctrd/container.go	59.76% <0%> (+0.95%)	⬆️
daemon/mgr/container_utils.go	84.33% <0%> (+1.2%)	⬆️
... and 2 more

[fuweid]

LGTM but wait for CI