[Quota Manager] Fix k8s Deployment Issues

[kevin-zhonghao]

This PR proposes to fix k8s deployment issues for quota manager:

1. update quota_manager.yaml and api_gateway.yaml
2. update dockerfile of quota manager

[xieus]

LGTM.

[codecov-commenter]

Codecov Report

Merging #391 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #391   +/-   ##
=========================================
  Coverage     35.09%   35.10%           
  Complexity      992      992           
=========================================
  Files           422      422           
  Lines         10415    10415           
  Branches       1256     1256           
=========================================
+ Hits           3655     3656    +1     
+ Misses         6296     6295    -1     
  Partials        464      464           

Impacted Files	Coverage Δ	Complexity Δ
...alcor/elasticipmanager/dao/ElasticIpAllocator.java	63.81% <0.00%> (+0.27%)	48.00% <0.00%> (ø%)

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