adb: Support rescue install and getprop.
Bug: 128415917
Test: Enter rescue mode on taimen. Send the following commands:
`adb rescue getprop ro.build.fingerprint`
`adb rescue getprop ro.build.date.utc`
`adb rescue getprop ro.build.invalid`
`adb rescue install /path/to/package.zip`
Test: Sideload on taimen w/ `adb sideload /path/to/package.zip`.
Change-Id: Ia246b30314fbcd2bd4cc71a8085a280e33041967
Merged-In: Ia246b30314fbcd2bd4cc71a8085a280e33041967
(cherry picked from commit 11cf30b5edf839a353180b39ae4e55c544beaf56)
2 files changed