[Feature] Update ColorJitter

[Yshuo-Li]

No description provided.

[codecov]

Codecov Report

Merging #859 (762ac91) into master (a852622) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #859      +/-   ##
==========================================
+ Coverage   83.12%   83.13%   +0.01%     
==========================================
  Files         220      220              
  Lines       12453    12463      +10     
  Branches     2017     2020       +3     
==========================================
+ Hits        10351    10361      +10     
  Misses       1785     1785              
  Partials      317      317              

Flag	Coverage Δ
unittests	83.10% <100.00%> (+0.02%)	⬆️

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Impacted Files	Coverage Δ
mmedit/datasets/pipelines/augmentation.py	98.89% <100.00%> (+0.39%)	⬆️
...ls/components/stylegan2/generator_discriminator.py	84.93% <0.00%> (-1.21%)	⬇️

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[wangruohui]

Why change to_rgb? This will cause bc-breaking.