tree c1a88feb2787a19076c7a661220106f6f7816627
parent 742419945993c362979859c9c367744a1744612a
author Sen Jiang <senj@google.com> 1520390019 -0800
committer Treehugger Robot <treehugger-gerrit@google.com> 1520464775 +0000

Also set system version to ForcedUpdate.

`update_engine_client --update` will set the app version to
ForcedUpdate, but the system version should be overriden too,
if exists.

Bug: 73896093
Test: update_engine_client --update
Change-Id: Ibd41eecacb5312d6f77d5e0c33af090aca38e054