retry fast adb push

This time, push host/* instead of host/.  This cuts the time it takes to
push resources from ~11m to ~8s on Android One phones.

I tried ignoring version files and blindly pushing packages, but in the
end kept the version files for compatibility with bots running at head
(or after this lands, bisecting bots), and those version files still do
save a good chunk of time.  In PS12 I faked version file mismatch and it
took ~2m extra to push all the packages back.

I also tried but got nervous about --sync so I've left it for a follow
up.  It's not clear that we can rely on it for packages where files will
be removed, but it's probably fine for resources/ if we want to go
faster than 8s.

Change-Id: I84de90f13177393e4d8a599ef880545538b6af81
Reviewed-by: Eric Boren <>
Reviewed-by: Brian Osman <>
Commit-Queue: Mike Klein <>
28 files changed