feat: change network url

[zctocm]

This change is 

[codecov]

Codecov Report

Merging #1324 (087dd35) into dev (5ea73d5) will increase coverage by 0.03%.
The diff coverage is 56.49%.

@@            Coverage Diff             @@
##              dev    #1324      +/-   ##
==========================================
+ Coverage   35.73%   35.77%   +0.03%     
==========================================
  Files         606      606              
  Lines       38855    38935      +80     
  Branches     2015     2014       -1     
==========================================
+ Hits        13886    13929      +43     
- Misses      24756    24793      +37     
  Partials      213      213              

Flag	Coverage Δ
integrationtests	28.63% <56.49%> (+0.05%)	⬆️
unittests	24.28% <0.64%> (-0.06%)	⬇️

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

Impacted Files	Coverage Δ
packages/popup/src/constants/index.js	0.00% <0.00%> (ø)
packages/rpcs/wallet_afterUnlock/index.js	65.51% <0.00%> (-5.13%)	⬇️
packages/rpcs/wallet_getNetwork/index.js	44.57% <0.00%> (-17.09%)	⬇️
packages/rpcs/cfx_gasPrice/index.js	46.15% <50.00%> (ø)
packages/background/src/index.js	81.76% <100.00%> (+6.33%)	⬆️
packages/background/src/init-db.js	98.98% <100.00%> (+0.10%)	⬆️

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