test: add missing removal of container

[allencloud]

Signed-off-by: Allen Sun [email protected]

Ⅰ. Describe what this PR did

This pull request adds missing removal of container.

cc @Letty5411

Otherwise I will get CI failure like:

FAIL: /go/src/github.com/alibaba/pouch/test/cli_ps_test.go:76: PouchPsSuite.TestPsAll
/go/src/github.com/alibaba/pouch/test/cli_ps_test.go:86:
    // show running containers default
    c.Assert(lines[1], check.Equals, "")
... obtained string = "TestAPIRestartPauseContainer   4b8795   Up 1 minute   1 minute ago   registry.hub.docker.com/library/busybox:1.28   runc"
... expected string = ""

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

[codecov-io]

Codecov Report

Merging #1327 into master will decrease coverage by 0.89%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #1327     +/-   ##
=========================================
- Coverage   17.33%   16.44%   -0.9%     
=========================================
  Files         189      182      -7     
  Lines       11815    11295    -520     
=========================================
- Hits         2048     1857    -191     
+ Misses       9619     9302    -317     
+ Partials      148      136     -12

Impacted Files	Coverage Δ
pkg/utils/utils.go	69.79% <0%> (-2.6%)	⬇️
daemon/mgr/spec_mount.go	0% <0%> (ø)	⬆️
client/container.go	0% <0%> (ø)	⬆️
daemon/mgr/container.go	0% <0%> (ø)	⬆️
cli/exec.go	0% <0%> (ø)	⬆️
apis/server/container_bridge.go	0% <0%> (ø)	⬆️
ctrd/container.go	0% <0%> (ø)	⬆️
apis/server/router.go	0% <0%> (ø)	⬆️
daemon/logger/jsonfile/jsonfile_read.go
cri/src/cri_stream.go
... and 23 more

[HusterWan]

LGTM