fix: location.origin compatible with ie10

[xiaohuoni]

Close #1179

[coveralls]

Pull Request Test Coverage Report for Build 1824

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 23 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.2%) to 32.98%

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Files with Coverage Reduction	New Missed Lines	%
packages/babel-preset-umi/src/webpack-overrides.js	1	0.0%
packages/umi/src/cli.js	2	0.0%
packages/umi-build-dev/src/getPlugins.js	2	80.88%
packages/af-webpack/src/dev.js	4	0.0%
packages/umi-plugin-locale/src/index.js	4	80.6%
packages/umi-build-dev/src/getConfig/watch.js	10	3.57%

Totals
Change from base Build 1790:	-0.2%
Covered Lines:	1056
Relevant Lines:	3280

---

💛 - Coveralls

[sorrycc]

umi 内置方案里哪里有用到 location.origin 吗？

[xiaohuoni]

umi/packages/umi-build-dev/src/html/HTMLGenerator.js

Line 263 in 5a75035

publicPathStr = 'location.origin + window.routerBase';

[sorrycc]

把这行改成下面的吧，简单一点，

pubicPathStr = `location.protocol + '//' + location.hostname + (location.port ? ':' + location.port : '') + window.routerBase`;

[sorrycc]

ci 挂了，用例需要调整下。

[xiaohuoni]

@sorrycc 要不你直接改了吧，这个关闭了，我这里没有window电脑。或者我晚上回去处理

[sorrycc]

好的，我来改用例。