[Route-Manager] Fix Neutron Router Issues

[kevin-zhonghao]

Fix the following issues when testing Neutron Router:

1. Changed web class Json name in list routers API: neutronRouters -> routers.
2. Fix the issue that can not find project id when create a neutron router.
3. Fix the issue that the router id passed in is inconsistent with the router id stored in the database when create a neutron router.

[codecov-commenter]

Codecov Report

Merging #385 into master will decrease coverage by 0.00%.
The diff coverage is 40.00%.

@@             Coverage Diff              @@
##             master     #385      +/-   ##
============================================
- Coverage     34.24%   34.24%   -0.01%     
  Complexity      959      959              
============================================
  Files           413      413              
  Lines         10086    10089       +3     
  Branches       1228     1229       +1     
============================================
+ Hits           3454     3455       +1     
- Misses         6189     6190       +1     
- Partials        443      444       +1     

Impacted Files	Coverage Δ	Complexity Δ
.../futurewei/alcor/route/utils/RouteManagerUtil.java	62.22% <ø> (ø)	6.00 <0.00> (ø)
...r/route/service/Impl/NeutronRouterServiceImpl.java	59.71% <33.33%> (-0.44%)	25.00 <0.00> (ø)
...lcor/route/controller/NeutronRouterController.java	60.15% <50.00%> (+0.31%)	12.00 <0.00> (ø)

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[xieus]

LGTM. Thanks for the prompt fix.