bugfix: refine tests with specifying CMD

[Letty5411]

Signed-off-by: letty letty.ll@alibaba-inc.com

Ⅰ. Describe what this PR did

Add "top" CMD when running a container. If we don't specify CMD when starting a container, it will use the default one in image, most of time it is sh. Sometimes, test may expect the container in running state, which is not true if CMD is not specified explicitly.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how you did it

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[allencloud]

It seems that this is quite huge change from the effectiveness's perspective. We should detect and fix this early. 🍻

[codecov-io]

Codecov Report

Merging #1548 into master will decrease coverage by 1.87%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1548      +/-   ##
==========================================
- Coverage   41.29%   39.42%   -1.88%     
==========================================
  Files         257      255       -2     
  Lines       16988    17757     +769     
==========================================
- Hits         7016     7000      -16     
- Misses       9100     9883     +783     
- Partials      872      874       +2

Impacted Files	Coverage Δ
daemon/mgr/container.go	36.26% <0%> (-14.19%)	⬇️
daemon/mgr/container_state.go	75.64% <0%> (-7.46%)	⬇️
daemon/config/config.go	14.41% <0%> (-5.34%)	⬇️
ctrd/watch.go	75% <0%> (-3.13%)	⬇️
ctrd/image.go	76.57% <0%> (-2.86%)	⬇️
daemon/mgr/volume.go	76.76% <0%> (-2.4%)	⬇️
daemon/mgr/container_types.go	73.91% <0%> (-2.21%)	⬇️
ctrd/container.go	49.45% <0%> (-0.73%)	⬇️
daemon/mgr/network.go	68.94% <0%> (-0.49%)	⬇️
cri/v1alpha1/cri.go	0% <0%> (ø)	⬆️
... and 6 more

[allencloud]

LGTM