Add PartitionUpdateGenerator

For a/b partial update, the payload doesn't contain all partitions
for the device to boot up. Therefore, we add a new class to generate
additional operations on top of the partial update. The class is used
in payload consumer when the install plan is created.

In specific, the new class parses for the a/b partitions not included in
the payload. Then, for static partitions, it generates SOURCE_COPY
operations to copy the bytes from the source slot to target slot. For
dynamic partitions, it only calculates the partition hash for the filesystem
verification later.

Bug: 157778739
Test: do a partial OTA
Change-Id: Ia5c64cff4655aad05311b0e7c8c8327bc2f4fd91

0 files changed, 0 insertions, 0 deletions