Changing moblab user from root to moblab

BUG=None
TEST=moblab_tunnel -u moblab3

Change-Id: I33dd1e77c6fd9e8d4dc603f44d32fcbf3c8475a6
Reviewed-on: https://chromium-review.googlesource.com/506427
Commit-Ready: Tyler Reid <twreid@google.com>
Tested-by: Tyler Reid <twreid@google.com>
Reviewed-by: danny chan <dchan@chromium.org>
diff --git a/provingground/firmware/moblab_tunnel.sh b/provingground/firmware/moblab_tunnel.sh
index e0fd059..d4d47a5 100755
--- a/provingground/firmware/moblab_tunnel.sh
+++ b/provingground/firmware/moblab_tunnel.sh
@@ -109,7 +109,7 @@
       set -- $mobs
       m=$1
       echo Connecting to $m with IP ${MOBLABS[$m]}
-      ssh root@${MOBLABS[$m]}
+      ssh moblab@${MOBLABS[$m]}
     fi
   else
     usage