fix qos configuration cannot work. #4377

[cvictory]

#4377

[codecov-io]

Codecov Report

Merging #4378 into master will decrease coverage by 0.08%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4378      +/-   ##
============================================
- Coverage     62.97%   62.89%   -0.09%     
+ Complexity      451      450       -1     
============================================
  Files           769      769              
  Lines         32995    32995              
  Branches       5215     5215              
============================================
- Hits          20779    20751      -28     
- Misses         9818     9844      +26     
- Partials       2398     2400       +2

Impacted Files	Coverage Δ	Complexity Δ
...ava/org/apache/dubbo/config/ApplicationConfig.java	91.3% <ø> (ø)	0 <0> (ø)	⬇️
.../apache/dubbo/qos/protocol/QosProtocolWrapper.java	64.1% <0%> (-17.95%)	0% <0%> (ø)
.../remoting/transport/netty4/NettyServerHandler.java	61.9% <0%> (-9.53%)	0% <0%> (ø)
...ng/transport/dispatcher/all/AllChannelHandler.java	51.42% <0%> (-5.72%)	0% <0%> (ø)
.../org/apache/dubbo/remoting/ExecutionException.java	15.78% <0%> (-5.27%)	0% <0%> (ø)
...onfig/spring/extension/SpringExtensionFactory.java	80.48% <0%> (-4.88%)	0% <0%> (ø)
...exchange/support/header/HeaderExchangeHandler.java	64.75% <0%> (-2.46%)	0% <0%> (ø)
...he/dubbo/registry/multicast/MulticastRegistry.java	67.87% <0%> (-1.81%)	0% <0%> (ø)
...pache/dubbo/registry/support/AbstractRegistry.java	81.6% <0%> (-1.15%)	0% <0%> (ø)
...ache/dubbo/registry/multiple/MultipleRegistry.java	62.67% <0%> (-0.71%)	20% <0%> (-1%)
... and 2 more

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[chickenlj]

LGTM