Fix: jsonrpc

[fangyincheng]

What this PR does:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (develop@c268f8f). Click here to learn what that means.
The diff coverage is 82.71%.

@@            Coverage Diff             @@
##             develop     #327   +/-   ##
==========================================
  Coverage           ?   66.72%           
==========================================
  Files              ?      118           
  Lines              ?     7419           
  Branches           ?        0           
==========================================
  Hits               ?     4950           
  Misses             ?     1978           
  Partials           ?      491

Impacted Files	Coverage Δ
config/config_center_config.go	71.42% <ø> (ø)
remoting/zookeeper/client.go	63.87% <ø> (ø)
protocol/jsonrpc/server.go	60% <0%> (ø)
remoting/zookeeper/listener.go	47.17% <100%> (ø)
registry/zookeeper/registry.go	55.55% <100%> (ø)
common/proxy/proxy.go	97.87% <100%> (ø)
protocol/grpc/grpc_exporter.go	100% <100%> (ø)
config/config_loader.go	58.53% <100%> (ø)
config_center/apollo/impl.go	87.01% <100%> (ø)
protocol/grpc/server.go	66.66% <66.66%> (ø)
... and 4 more

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[flycash]

There is one more http.Response you should fix

[AlexStocks]

LGTM