[Refactoring] Add Caffe2Xavier Initializer

[MeowZheng]

No description provided.

[codecov]

Codecov Report

Merging #902 (0564d91) into master (933b052) will increase coverage by 0.02%.
The diff coverage is 100.00%.

❗ Current head 0564d91 differs from pull request most recent head d4bca2c. Consider uploading reports for the commit d4bca2c to get more accurate results

@@            Coverage Diff             @@
##           master     #902      +/-   ##
==========================================
+ Coverage   65.91%   65.93%   +0.02%     
==========================================
  Files         147      147              
  Lines        8986     8992       +6     
  Branches     1613     1614       +1     
==========================================
+ Hits         5923     5929       +6     
  Misses       2747     2747              
  Partials      316      316              

Flag	Coverage Δ
unittests	65.93% <100.00%> (+0.02%)	⬆️

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Impacted Files	Coverage Δ
mmcv/cnn/__init__.py	100.00% <100.00%> (ø)
mmcv/cnn/utils/__init__.py	100.00% <100.00%> (ø)
mmcv/cnn/utils/weight_init.py	98.85% <100.00%> (+0.04%)	⬆️

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