Implement common library for converting InstallOps to Cow Ops am: b05e4e2705 am: f3136c297d am: 7a00e9eff6

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1414968

Change-Id: I6a4ccd18db66ec636a1a6ab34abbdb0f13876602