bugfix: fix panic for AttachVolume unittests

[shaloulcy]

Signed-off-by: Eric Li [email protected]

Ⅰ. Describe what this PR did

bugfix: fix panic for AttachVolume unittests

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 #1923 into master will increase coverage by 0.32%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #1923      +/-   ##
==========================================
+ Coverage    62.3%   62.62%   +0.32%     
==========================================
  Files         200      200              
  Lines       15567    15573       +6     
==========================================
+ Hits         9699     9753      +54     
+ Misses       4609     4569      -40     
+ Partials     1259     1251       -8

Flag	Coverage Δ
#criv1alpha1test	33.12% <0%> (-0.17%)	⬇️
#criv1alpha2test	33.66% <0%> (-0.04%)	⬇️
#integrationtest	37.97% <0%> (+0.02%)	⬆️
#unittest	20.48% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
storage/volume/types/volume_util.go	15.82% <0%> (-0.63%)	⬇️
cri/v1alpha2/cri.go	65.96% <0%> (-0.18%)	⬇️
daemon/mgr/container.go	54% <0%> (+0.15%)	⬆️
daemon/logger/jsonfile/utils.go	73.17% <0%> (+1.62%)	⬆️
daemon/mgr/system.go	75% <0%> (+1.72%)	⬆️
daemon/mgr/container_utils.go	58% <0%> (+1.73%)	⬆️
ctrd/image.go	81.18% <0%> (+1.98%)	⬆️
daemon/mgr/image_utils.go	85.45% <0%> (+3.63%)	⬆️
daemon/containerio/options.go	80.95% <0%> (+4.76%)	⬆️
pkg/meta/store.go	59.52% <0%> (+4.76%)	⬆️
... and 4 more

[allencloud]

Could you give more details about where panic? show some test logs? @shaloulcy

[rudyfly]

LGTM