Ready for release 1.5.5

[zouyx]

What this PR does:

• Add two PR for bug fix.
• 1.5 has included Fix: generic  #945 , so not in this PR.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-io]

Codecov Report

Merging #946 (daede0f) into 1.5 (9be9fef) will increase coverage by 0.09%.
The diff coverage is 87.09%.

@@            Coverage Diff             @@
##              1.5     #946      +/-   ##
==========================================
+ Coverage   59.85%   59.95%   +0.09%     
==========================================
  Files         260      260              
  Lines       12855    12858       +3     
==========================================
+ Hits         7695     7709      +14     
+ Misses       4199     4185      -14     
- Partials      961      964       +3     

Impacted Files	Coverage Δ
common/proxy/proxy_factory/default.go	13.55% <0.00%> (ø)
metadata/service/remote/service.go	39.72% <0.00%> (ø)
filter/filter_impl/access_log_filter.go	61.90% <60.00%> (+1.12%)	⬆️
common/rpc_service.go	88.11% <100.00%> (+0.16%)	⬆️
common/url.go	58.78% <100.00%> (+2.19%)	⬆️
config/reference_config.go	80.00% <100.00%> (ø)
config/service_config.go	62.67% <100.00%> (ø)
filter/filter_impl/generic_service_filter.go	67.30% <100.00%> (ø)
metadata/service/inmemory/service.go	85.22% <100.00%> (ø)
protocol/dubbo/dubbo_exporter.go	100.00% <100.00%> (ø)
... and 9 more

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[zouyx]

Has it finished test already? @fangyincheng