New Ftr: allow user set custom params to register to registry

[hxmhlt]

What this PR does:

New Ftr: allow user set custom params to register to registry
Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

User can set references & services params in consumer.yml & provider.yml

[codecov-io]

Codecov Report

Merging #117 into develop will increase coverage by 1.36%.
The diff coverage is 58.06%.

@@             Coverage Diff             @@
##           develop     #117      +/-   ##
===========================================
+ Coverage    67.21%   68.57%   +1.36%     
===========================================
  Files           69       69              
  Lines         4346     4363      +17     
===========================================
+ Hits          2921     2992      +71     
+ Misses        1123     1072      -51     
+ Partials       302      299       -3

Impacted Files	Coverage Δ
config/registry_config.go	91.17% <ø> (ø)	⬆️
remoting/zookeeper/listener.go	45.94% <0%> (+2.16%)	⬆️
config/service_config.go	66.66% <0%> (-1.83%)	⬇️
config/reference_config.go	92% <100%> (+0.21%)	⬆️
common/config/environment.go	80.55% <28.57%> (-10.07%)	⬇️
config/base_config.go	63.51% <73.68%> (-0.52%)	⬇️
remoting/zookeeper/client.go	64.16% <0%> (+4.62%)	⬆️
protocol/dubbo/pool.go	62.01% <0%> (+5.02%)	⬆️
protocol/dubbo/readwriter.go	72.97% <0%> (+5.4%)	⬆️
... and 2 more

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[wongoo]

LGTM