change proto version type from int64 to int32

1. change protp type from int64 to int32
2. change all field to optional

Bug: 64131637
Test: Build
Change-Id: Ifd6fce70051b54cf4ca0105023a6af7aa0a055b3
(cherry picked from commit 0bc71acefd0fa2a052354346ddb31bdcbe29e597)
Merged-in: Ifd6fce70051b54cf4ca0105023a6af7aa0a055b3
1 file changed