Check for system_other existence in recovery mode as well. am: 13e4195d65 am: 226f3bf394 am: d77a11c89f am: 320de84429

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1325774

Change-Id: I3e5a3edf9b3e9e0b35b65c4c5a8fe17611c5b070