bugfix: issues with go vet

[eahydra]

Signed-off-by: Joseph Lee [email protected]

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

fix #964

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

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2551 into master will increase coverage by 0.04%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #2551      +/-   ##
==========================================
+ Coverage   69.16%   69.21%   +0.04%     
==========================================
  Files         278      278              
  Lines       18552    18552              
==========================================
+ Hits        12831    12840       +9     
+ Misses       4246     4240       -6     
+ Partials     1475     1472       -3

Flag	Coverage Δ
#criv1alpha1test	31.09% <0%> (-0.11%)	⬇️
#criv1alpha2test	35.63% <0%> (+0.02%)	⬆️
#integrationtest	40.56% <0%> (-0.02%)	⬇️
#nodee2etest	32.74% <0%> (+0.11%)	⬆️
#unittest	26.8% <0%> (ø)	⬆️

Impacted Files	Coverage Δ
pkg/netutils/interface.go	89.04% <0%> (ø)	⬆️
daemon/logger/jsonfile/utils.go	71.54% <0%> (ø)	⬆️
cri/v1alpha1/cri.go	60.26% <0%> (-0.67%)	⬇️
cri/v1alpha2/cri_wrapper.go	64.4% <0%> (ø)	⬆️
daemon/mgr/container.go	58.99% <0%> (+0.21%)	⬆️
cri/v1alpha2/cri_utils.go	89.75% <0%> (+0.28%)	⬆️
cri/v1alpha2/cri.go	68.95% <0%> (+0.36%)	⬆️
ctrd/container.go	59.2% <0%> (+0.79%)	⬆️
apis/server/utils.go	75% <0%> (+3.84%)	⬆️

[pouchrobot]

We found this is your first time to contribute to Pouch, @eahydra
👏 We really appreciate it.
Just remind that you have read the contribution guide: https://github.com/alibaba/pouch/blob/master/CONTRIBUTING.md
If you didn't, you should do that first. If done, welcome again and please enjoy hacking! 🍻

[CLAassistant]

All committers have signed the CLA.

[HusterWan]

LGTM

[HusterWan]

Good catch