4200 Adds test harnesses for integration tests on Android (cla: yes, waiting for tree to go green, p: google_maps_flutter, p: google_sign_in, p: image_picker, p: quick_actions, platform-android)

4201 [in_app_purchase] Correct mistake with markdown in README.md (cla: yes, waiting for tree to go green, p: in_app_purchase, platform-android)

4214 [google_maps_flutter] Temporarily disable googleMapsPluginIsAdded (cla: yes, p: google_maps_flutter, platform-android)

platform-ios - 67 pull request(s)

3360 [video_player] Fixed HLS Streams on iOS (cla: yes, p: video_player, platform-ios)