Create ssh session per run

.. otherwise, it will choke on stdout reuse.

BUG=none
TEST=local + CQ

Change-Id: I2148c52935b553cd64d039fad4c324ea8caf8008
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/6300453
Reviewed-by: Julio Hurtado <juahurta@google.com>
Tested-by: Jae Hoon Kim <kimjae@chromium.org>
Auto-Submit: Jae Hoon Kim <kimjae@chromium.org>
Commit-Queue: ChromeOS Auto Retry <chromeos-auto-retry@chromeos-bot.iam.gserviceaccount.com>
1 file changed