fix: egg layer x forwarded for

[echosoar]

fixed: #761

[gitpod-io]

[codecov-io]

Codecov Report

Merging #768 (1f7d78c) into 2.x (ee77af5) will decrease coverage by 0.01%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##              2.x     #768      +/-   ##
==========================================
- Coverage   86.48%   86.47%   -0.02%     
==========================================
  Files         144      144              
  Lines        5904     5906       +2     
  Branches     1092     1093       +1     
==========================================
+ Hits         5106     5107       +1     
- Misses        766      767       +1     
  Partials       32       32              

Impacted Files	Coverage Δ
packages-serverless/egg-layer/index.js	85.36% <50.00%> (-1.82%)	⬇️

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