add localeScript in android only section for Locale

[KazuCocoa]

Proposed changes

depends on appium/appium-android-driver#460

After merging the above PR and bump appium-android-driver, we can set locale with script section.
It means we can set zh-Hans-CN styled locale for Android additionally en-US formatted one.

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[KazuCocoa]

Document localeScript #11649