Merge changes from topic "apps_to_system_ext"

* changes:
  Move the app to /system_ext
  Set sdk_version "current" in test package
  Move the permission.xml to /system_ext
  Move SystemUI to /system_ext
  move privapp_whitelist_com.android.storagemanager to system_ext
  Move 'privapp_whitelist_com.android.launcher3' to system_ext
  Move 'privapp_whitelist_com.android.settings' to system_ext
  move privapp_whitelist_com.android.provision to system_ext
  privapp_whitelist_com.android.emergency to system_ext
  privapp_whitelist_com.android.carrierconfig to system_ext