uc 优化

[YangSen-qn]

• 优化 uc query 预取失败处理, 当失败而获取的所有 zone 进行生效一次。
• uplog quality 日志统计 uc 耗时和上传类型
• uc query 支持配置 server 数组
• 网络检测超时默认设置为 2s
• sdk version to 8.3.2

[codecov[bot]]

Codecov Report

Merging #400 (39b8948) into develop (345defa) will increase coverage by 0.34%. The diff coverage is 90.16%.

@@             Coverage Diff             @@
##           develop     #400      +/-   ##
===========================================
+ Coverage    77.63%   77.97%   +0.34%     
===========================================
  Files          114      113       -1     
  Lines         8567     8600      +33     
===========================================
+ Hits          6651     6706      +55     
+ Misses        1916     1894      -22     

Impacted Files	Coverage Δ
QiniuSDK/Collect/QNReportItem.m	81.72% <ø> (ø)
QiniuSDK/Storage/QNConfiguration.h	100.00% <ø> (ø)
QiniuSDK/Common/QNAutoZone.m	91.40% <72.22%> (-3.38%)	:arrow_down:
QiniuSDK/Storage/QNPartsUpload.m	94.65% <85.71%> (-0.35%)	:arrow_down:
QiniuSDK/Common/QNFixedZone.m	83.15% <100.00%> (ø)
QiniuSDK/Common/QNZoneInfo.m	94.28% <100.00%> (+0.53%)	:arrow_up:
QiniuSDK/Http/QNUploadRequestMetrics.m	94.47% <100.00%> (+2.17%)	:arrow_up:
QiniuSDK/Storage/QNBaseUpload.m	90.75% <100.00%> (+0.23%)	:arrow_up:
QiniuSDK/Storage/QNConfiguration.m	97.05% <100.00%> (ø)
QiniuSDK/Storage/QNFormUpload.m	100.00% <100.00%> (ø)
... and 12 more

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[bachue]

先合并到 develop 分支，之后统一给 QA 测试并合并到 master 分支