[#SCB-2271]refactoring router code

[liubao68]

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[codecov-commenter]

Codecov Report

Merging #2500 (9b336a4) into master (540e1e3) will decrease coverage by 0.00%.
The diff coverage is 50.00%.

❗ Current head 9b336a4 differs from pull request most recent head 7aedcfb. Consider uploading reports for the commit 7aedcfb to get more accurate results

@@             Coverage Diff              @@
##             master    #2500      +/-   ##
============================================
- Coverage     79.19%   79.19%   -0.01%     
  Complexity     1419     1419              
============================================
  Files          1559     1559              
  Lines         41567    41572       +5     
  Branches       3469     3470       +1     
============================================
+ Hits          32920    32923       +3     
- Misses         7156     7158       +2     
  Partials       1491     1491              

Impacted Files	Coverage Δ
...omb/registry/api/registry/MicroserviceFactory.java	67.56% <ø> (ø)
...icecomb/registry/consumer/MicroserviceVersion.java	100.00% <ø> (ø)
.../registry/consumer/StaticMicroserviceVersions.java	100.00% <ø> (ø)
...ache/servicecomb/registry/version/VersionRule.java	83.33% <ø> (ø)
...ecomb/registry/version/VersionRuleFixedParser.java	100.00% <ø> (ø)
...comb/registry/version/VersionRuleLatestParser.java	100.00% <ø> (ø)
...ecomb/registry/version/VersionRuleRangeParser.java	100.00% <ø> (ø)
...b/registry/version/VersionRuleStartFromParser.java	100.00% <ø> (ø)
...che/servicecomb/registry/version/VersionUtils.java	75.00% <ø> (ø)
.../router/exception/RouterIllegalParamException.java	0.00% <ø> (ø)
... and 19 more

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