make gRPC dialer accept socket config

[dyhkwong]

similar to #1264

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 39.20%. Comparing base (0bf1f2b) to head (f88b02a).
Report is 419 commits behind head on master.

Files	Patch %	Lines
transport/internet/grpc/dial.go	0.00%	3 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1697      +/-   ##
==========================================
- Coverage   39.21%   39.20%   -0.02%     
==========================================
  Files         605      604       -1     
  Lines       35633    35577      -56     
==========================================
- Hits        13975    13947      -28     
+ Misses      20098    20075      -23     
+ Partials     1560     1555       -5     

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