test: Clean up temporary test file

[zjumoon01]

Clean /tmp/TestRunWithHostFileVolume.md after test

Signed-off-by: Wang Rui baijia.wr@antfin.com

Ⅰ. Describe what this PR did

Cleanup /tmp/TestRunWithHostFileVolume.md which is created in test case.

Ⅱ. Does this pull request fix one issue?

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

Check /tmp/TestRunWithHostFileVolume.md file exists after running test case cli_run_volume_test.go:TestRunWithHostFileVolume .
After this patch, this file will be cleaned after the test.

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2535 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2535      +/-   ##
=========================================
+ Coverage    69.2%   69.2%   +<.01%     
=========================================
  Files         278     278              
  Lines       18494   18494              
=========================================
+ Hits        12798   12799       +1     
+ Misses       4243    4236       -7     
- Partials     1453    1459       +6

Flag	Coverage Δ
#criv1alpha1test	31.33% <ø> (+0.01%)	⬆️
#criv1alpha2test	35.43% <ø> (+0.16%)	⬆️
#integrationtest	40.55% <ø> (+0.01%)	⬆️
#nodee2etest	32.66% <ø> (-0.13%)	⬇️
#unittest	26.91% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
daemon/logger/jsonfile/utils.go	71.54% <0%> (-1.63%)	⬇️
pkg/meta/store.go	67.44% <0%> (-1.56%)	⬇️
daemon/mgr/container_utils.go	85.44% <0%> (-1.27%)	⬇️
cri/v1alpha2/cri_wrapper.go	62.4% <0%> (-1.21%)	⬇️
cri/v1alpha2/cri.go	69.43% <0%> (-0.51%)	⬇️
daemon/mgr/container.go	59.12% <0%> (-0.22%)	⬇️
ctrd/container.go	59.2% <0%> (+1.18%)	⬆️
ctrd/watch.go	84.5% <0%> (+2.81%)	⬆️
pkg/streams/utils.go	91.66% <0%> (+9.52%)	⬆️

[rudyfly]

Can you modify the PR title to this format: test: clean up temporary test file
More detail you can see: https://github.com/alibaba/pouch/blob/master/CONTRIBUTING.md#commit-message

[allencloud]

LGTM, I have updated the pr title name to add the prefix.