build_packages.sh: Fix RBE bootstrap typos

Fix typos and remove unnecessary quotes so that RBE
starts and shuts down correctly.

BUG=b:203606263
TEST=RBE starts and shuts down with --run_remoteexec

Change-Id: Ifda8673f76c57101f5dfd16c31b2307f87153689
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3436862
Commit-Queue: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Auto-Submit: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Cindy Lin <xcl@google.com>
Commit-Queue: Cindy Lin <xcl@google.com>
1 file changed