Enable SSH BatchMode

Author: walkeran

share/github-backup-utils/ghe-ssh

@@ -61,4 +61,4 @@ fi
 $GHE_VERBOSE_SSH && set -x
 
 # Exec ssh command with modified host / port args and add nice to command.
-exec ssh $opts "$host" -- $GHE_NICE $GHE_IONICE "$@"
+exec ssh $opts -o 'BatchMode yes' "$host" -- $GHE_NICE $GHE_IONICE "$@"