game_report: Adapt the scripts to work in Borealis

The current Borealis image has Python 3.6 installed, but the original
scripts were written for Python 3.7+. Several minor fixes were applied
to make it possible to use these scripts in Borealis.

TEST=Tested with both crostini and borealis guests

Change-Id: I4aafebf273cfe1be777cb202009b80fbf3f19034
Commit-Queue: Robert Tarasov <>
Tested-by: Robert Tarasov <>
Reviewed-by: Po-Hsien Wang <>
3 files changed