Opt: support multi gateway

[diwufeiwen]

No description provided.

[codecov-commenter]

Codecov Report

Merging #56 (d56ea52) into master (3bc5e29) will decrease coverage by 0.00%.
The diff coverage is 6.89%.

@@            Coverage Diff            @@
##           master     #56      +/-   ##
=========================================
- Coverage    5.05%   5.04%   -0.01%     
=========================================
  Files          98      98              
  Lines        6884    6894      +10     
=========================================
  Hits          348     348              
- Misses       6471    6481      +10     
  Partials       65      65              

Impacted Files	Coverage Δ
api/client/gateway_client.go	0.00% <0.00%> (ø)
node/config/gatewaydef.go	14.81% <6.25%> (-3.37%)	⬇️
node/config/def.go	66.10% <100.00%> (ø)

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