image_to_live: grep for listening address family-agnostically

Since devserver now listens on IPv6, this grep for the IPv4 generic
address won't work. Change to a grep for a listening socket on that
port (-l means listening only, so negates connections to it)

BUG=chromiumos:15716
TEST=image_to_live works for me again

Change-Id: Ia9ea44bbde0ce5c505bb79e8a508b1c881a26fab
Reviewed-on: http://gerrit.chromium.org/gerrit/1481
Reviewed-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Tested-by: Scott James Remnant <keybuk@chromium.org>
1 file changed