uc query default hosts add new one

[YangSen-qn]

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[codecov]

Codecov Report

Merging #480 (e3fbc38) into master (95a89b3) will increase coverage by 0.35%.
The diff coverage is 78.75%.

@@             Coverage Diff              @@
##             master     #480      +/-   ##
============================================
+ Coverage     69.26%   69.62%   +0.35%     
- Complexity     1308     1349      +41     
============================================
  Files           103      104       +1     
  Lines          6876     6962      +86     
  Branches       1045     1045              
============================================
+ Hits           4763     4847      +84     
- Misses         1346     1348       +2     
  Partials        767      767              

Impacted Files	Coverage Δ
.../main/java/com/qiniu/android/common/Constants.java	0.00% <ø> (ø)
.../qiniu/android/http/request/HttpRegionRequest.java	79.16% <0.00%> (ø)
...iniu/android/http/connectCheck/ConnectChecker.java	91.46% <50.00%> (+9.75%)	⬆️
...droid/http/metrics/UploadSingleRequestMetrics.java	76.47% <75.00%> (-6.87%)	⬇️
.../qiniu/android/http/request/HttpSingleRequest.java	75.30% <77.27%> (ø)
...roid/http/request/httpclient/SystemHttpClient.java	72.90% <93.33%> (+0.76%)	⬆️
...c/main/java/com/qiniu/android/common/AutoZone.java	73.00% <100.00%> (+2.29%)	⬆️
...src/main/java/com/qiniu/android/common/Config.java	86.95% <100.00%> (+0.59%)	⬆️
...com/qiniu/android/http/request/IRequestClient.java	100.00% <100.00%> (ø)
...in/java/com/qiniu/android/storage/PartsUpload.java	76.28% <100.00%> (ø)
... and 12 more