Fix transferEnv in initContainer

[pigletfly]

Signed-off-by: pigletfly wangbing.adam@gmail.com

Ⅰ. Describe what this PR does

fixes of #875

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

[codecov-commenter]

Codecov Report

Merging #897 (01cbc7a) into master (af3e254) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #897      +/-   ##
==========================================
+ Coverage   47.89%   47.92%   +0.02%     
==========================================
  Files         119      119              
  Lines       11239    11241       +2     
==========================================
+ Hits         5383     5387       +4     
+ Misses       5039     5038       -1     
+ Partials      817      816       -1     

Flag	Coverage Δ
unittests	47.92% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/webhook/pod/mutating/sidecarset.go	73.83% <100.00%> (+0.30%)	⬆️
pkg/controller/cloneset/cloneset_status.go	89.18% <0.00%> (+5.40%)	⬆️

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[FillZpp]

/lgtm

[kruise-bot]

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