add systemPort capability for uiautomator2
MODIFY
docs/en/appium-setup/parallel_tests.md
docs/en/appium-setup/parallel_tests.md
@@ -22,6 +22,8 @@ As long as your Appium and Appium bootstrap ports are between 0 and 65536, all t
If you are using chromedriver or selendroid, set a different port for each server.
+If you are using [appium-uiautomator2-server](https://github.com/appium/appium-uiautomator2-server), set a different system port with `systemPort` capability since sometimes the same ports is conflictted such as [this issue](https://github.com/appium/appium/issues/7745).
+
### Parallel iOS Tests
Unfortunately, running local parallel iOS tests isn't currently possible. Unlike Android, only one version of the iOS simulator can be launched at a time, making it run multiple tests at once.

add systemPort capability for uiautomator2