[Dubbo-1986]optimize redis connection release

[ningyu1]

What is the purpose of the change

Secure release of redis connections #1986

Brief changelog

Secure release of redis connections

Verifying this change

RedisProtocol.java

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[codecov-io]

Codecov Report

Merging #1987 into master will decrease coverage by 0.02%.
The diff coverage is 87.5%.

@@             Coverage Diff              @@
##             master    #1987      +/-   ##
============================================
- Coverage     50.84%   50.82%   -0.03%     
+ Complexity     4769     4764       -5     
============================================
  Files           562      562              
  Lines         25218    25218              
  Branches       4449     4449              
============================================
- Hits          12822    12816       -6     
- Misses        10466    10467       +1     
- Partials       1930     1935       +5

Impacted Files	Coverage Δ	Complexity Δ
...apache/dubbo/rpc/protocol/redis/RedisProtocol.java	60% <87.5%> (ø)	6 <0> (ø)	⬇️
.../dubbo/remoting/transport/netty4/NettyChannel.java	60% <0%> (-6.25%)	21% <0%> (-2%)
...ubbo/rpc/protocol/dubbo/ChannelWrappedInvoker.java	41.66% <0%> (-4.17%)	3% <0%> (ø)
...rpc/protocol/dubbo/telnet/InvokeTelnetHandler.java	51.89% <0%> (-3.8%)	11% <0%> (-2%)
...he/dubbo/remoting/transport/netty/NettyServer.java	67.85% <0%> (-3.58%)	8% <0%> (-1%)
...e/dubbo/remoting/transport/netty4/NettyServer.java	72.13% <0%> (-3.28%)	9% <0%> (-1%)
...org/apache/dubbo/rpc/filter/ActiveLimitFilter.java	88.88% <0%> (+5.55%)	7% <0%> (+1%)	⬆️
...apache/dubbo/rpc/protocol/dubbo/FutureAdapter.java	48.38% <0%> (+19.35%)	3% <0%> (ø)	⬇️

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