Add per-partition build info into ota metadata

As part of the ota metadata work to support partial update, we should
add the per-partition device name, fingerprint, and version to the ota
metadata.

Bug: 151088567
Bug: 166154730
Test: unit tests pass, generate a package
Change-Id: I7a71a4860aad651daf9e62df39c60d72727c14ff