fix cli annotation flagSet to StringArrayVar

[wangforthinker]

Ⅰ. Describe what this PR did

flagset.StringSlice will split args by comma so that the annotation parse job fails. Should use StringArray for env/labels.

Ⅱ. Does this pull request fix one issue?

NONE.

Ⅲ. Why don't you add test cases (unit test/integration test)? (你真的觉得不需要加测试吗？)

add test.

Ⅳ. Describe how to verify it

add test.

Ⅴ. Special notes for reviews

related to #2171.

[codecov]

Codecov Report

Merging #2702 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2702      +/-   ##
==========================================
+ Coverage    69.2%   69.21%   +<.01%     
==========================================
  Files         278      278              
  Lines       17449    17449              
==========================================
+ Hits        12076    12077       +1     
+ Misses       4045     4040       -5     
- Partials     1328     1332       +4

Flag	Coverage Δ
#criv1alpha2_test	39.52% <ø> (+0.28%)	⬆️
#integration_test_0	36.3% <ø> (+0.02%)	⬆️
#integration_test_1	35.23% <ø> (+0.03%)	⬆️
#integration_test_2	36.37% <ø> (+0.04%)	⬆️
#integration_test_3	35.14% <ø> (+0.08%)	⬆️
#node_e2e_test	34.95% <ø> (-0.07%)	⬇️
#unittest	27.39% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
cri/ocicni/cni_manager.go	58.82% <0%> (-11.77%)	⬇️
pkg/streams/utils.go	82.14% <0%> (-9.53%)	⬇️
ctrd/container.go	56.89% <0%> (-0.77%)	⬇️
cri/v1alpha2/cri.go	71.28% <0%> (-0.39%)	⬇️
daemon/mgr/container_utils.go	85.11% <0%> (+1.19%)	⬆️
pkg/meta/store.go	68.99% <0%> (+1.55%)	⬆️
cri/v1alpha2/container_unpause.go	81.81% <0%> (+81.81%)	⬆️
cri/v1alpha2/container_pause.go	81.81% <0%> (+81.81%)	⬆️

[wangforthinker]

ping @fuweid

[fuweid]

LGTM