[Dubbo-SPI] Spring spi support inject by type

[chickenlj]

What is the purpose of the change

Spring spi support inject by type. Not necessary to support spring 2.5 or lower.

Brief changelog

SpringExtensionFactory

Verifying this change

XXXX

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[codecov-io]

Codecov Report

Merging #1456 into master will decrease coverage by 0.02%.
The diff coverage is 27.27%.

@@            Coverage Diff             @@
##           master    #1456      +/-   ##
==========================================
- Coverage   31.59%   31.57%   -0.03%     
==========================================
  Files         682      682              
  Lines       33035    33046      +11     
  Branches     6592     6596       +4     
==========================================
- Hits        10438    10433       -5     
- Misses      20748    20757       +9     
- Partials     1849     1856       +7

Impacted Files	Coverage Δ
...onfig/spring/extension/SpringExtensionFactory.java	33.33% <27.27%> (-5.13%)	⬇️
...om/alibaba/dubbo/rpc/filter/ActiveLimitFilter.java	83.33% <0%> (-5.56%)	⬇️
...a/dubbo/remoting/transport/netty/NettyChannel.java	61.25% <0%> (-5%)	⬇️
...bo/remoting/transport/netty/NettyCodecAdapter.java	55.22% <0%> (-1.5%)	⬇️
...baba/dubbo/remoting/transport/mina/MinaClient.java	57.97% <0%> (-1.45%)	⬇️

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[nzomkxia]

whether the getBean() returns null or not, this line will end the function progress, is it the real purpose?

[zonghaishang]

We should consider multiple matching conditions for the same interface type.

[chickenlj]

See #1837 .
Close this one.