添加 美国和新加坡 endpoint

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[codecov[bot]]

Codecov Report

Merging #426 (b1ded53) into master (bffba94) will decrease coverage by 6.46%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #426      +/-   ##
==========================================
- Coverage   96.45%   89.98%   -6.47%     
==========================================
  Files          45       45              
  Lines        1888     1888              
  Branches      205      205              
==========================================
- Hits         1821     1699     -122     
- Misses         44      143      +99     
- Partials       23       46      +23     

Impacted Files	Coverage Δ
...-python-sdk-core/aliyunsdkcore/profile/__init__.py	0.00% <0.00%> (-100.00%)	:arrow_down:
...-sdk-core/aliyunsdkcore/profile/region_provider.py	0.00% <0.00%> (-100.00%)	:arrow_down:
...n-sdk-core/aliyunsdkcore/retry/backoff_strategy.py	71.05% <0.00%> (-23.69%)	:arrow_down:
aliyun-python-sdk-core/aliyunsdkcore/client.py	69.83% <0.00%> (-20.99%)	:arrow_down:
...on-sdk-core/aliyunsdkcore/retry/retry_condition.py	75.00% <0.00%> (-20.84%)	:arrow_down:
...-python-sdk-core/aliyunsdkcore/utils/validation.py	81.81% <0.00%> (-18.19%)	:arrow_down:
...liyunsdkcore/endpoint/chained_endpoint_resolver.py	87.50% <0.00%> (-12.50%)	:arrow_down:
aliyun-python-sdk-core/aliyunsdkcore/compat.py	57.57% <0.00%> (-12.13%)	:arrow_down:
...ython-sdk-core/aliyunsdkcore/retry/retry_policy.py	92.85% <0.00%> (-7.15%)	:arrow_down:
...ython-sdk-core/aliyunsdkcore/http/http_response.py	96.96% <0.00%> (-3.04%)	:arrow_down:
... and 1 more

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