Push care_map.pb to device when serving an OTA am: 5bd4622bd6 am: c2e58cb33c

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1613279

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I500752cb5460eecc546322170d7ede5a88bf7c91