问题：
appium启动app时，都会重新手动安装uiautomator2.server 和 uiautomator2.server.test
解决方法：
使用 skipServerInstallation：true 也可以，但是要保证已经安装了 io.appium.uiautomator2.server。
以下为官方说明
Skip the UiAutomator2 Server component installation on the device under test and all the related checks if set to
true. This could help to speed up the session startup if you know for sure the correct server version is installed on the device. In case the server is not installed or an incorrect version of it is installed then you may get an unexpected error later.falseby default