Fix metadata report configuration error

[foreveryang321]

What is the purpose of the change

Fix metadata report configuration error

Brief changelog

XXXXX

Verifying this change

XXXXX

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[codecov-io]

Codecov Report

Merging #3183 into 2.7.0-release will decrease coverage by 0.06%.
The diff coverage is n/a.

@@                 Coverage Diff                 @@
##             2.7.0-release    #3183      +/-   ##
===================================================
- Coverage            63.83%   63.76%   -0.07%     
  Complexity              75       75              
===================================================
  Files                  651      651              
  Lines                28317    28317              
  Branches              4793     4793              
===================================================
- Hits                 18076    18057      -19     
- Misses                7973     7992      +19     
  Partials              2268     2268

Impacted Files	Coverage Δ	Complexity Δ
.../org/apache/dubbo/config/MetadataReportConfig.java	41.66% <ø> (ø)	0 <0> (ø)	⬇️
.../remoting/transport/netty4/NettyClientHandler.java	75% <0%> (-11.12%)	0% <0%> (ø)
...org/apache/dubbo/rpc/protocol/AbstractInvoker.java	62.9% <0%> (-3.23%)	0% <0%> (ø)
...pache/dubbo/remoting/transport/AbstractServer.java	44.79% <0%> (-3.13%)	0% <0%> (ø)
...dubbo/remoting/exchange/support/DefaultFuture.java	70.46% <0%> (-2.69%)	0% <0%> (ø)
...a/org/apache/dubbo/monitor/dubbo/DubboMonitor.java	87.85% <0%> (-1.87%)	0% <0%> (ø)
...he/dubbo/registry/multicast/MulticastRegistry.java	63.79% <0%> (-1.73%)	0% <0%> (ø)
...rpc/protocol/dubbo/telnet/InvokeTelnetHandler.java	72.5% <0%> (-1.67%)	0% <0%> (ø)
.../java/org/apache/dubbo/config/ReferenceConfig.java	59.19% <0%> (+0.36%)	0% <0%> (ø)	⬇️
...c/main/java/org/apache/dubbo/rpc/RpcException.java	86.2% <0%> (+3.44%)	0% <0%> (ø)	⬇️

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[khanimteyaz]

Looks good to me.

[beiwei30]

LGTM