Add partial extraction capability to ota_extractor am: c7515d4721 am: 60a1638d34 am: 9e0b5b0d73 am: 4d2f7f0121

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2039503

Change-Id: I36fa4b5b2fd2c487623280c2ed477bd2d5f2e116