[FIX #716] fix the monitor in naming_grpc_proxy.

[brotherlu-xcq]

replace the config monitor with naming monitor in naming_grpc_proxy.

[CLAassistant]

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[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (89c5ab6) 32.69% compared to head (fffaaee) 32.63%.

❗ Current head fffaaee differs from pull request most recent head ab085b0. Consider uploading reports for the commit ab085b0 to get more accurate results

Files	Patch %	Lines
...nts/naming_client/naming_grpc/naming_grpc_proxy.go	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #717      +/-   ##
==========================================
- Coverage   32.69%   32.63%   -0.07%     
==========================================
  Files          45       45              
  Lines        3294     3294              
==========================================
- Hits         1077     1075       -2     
- Misses       2136     2138       +2     
  Partials       81       81              

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[binbin0325]

LGTM