LU-14053 utils: detect hangup in ofd_access_log_reader

LU-14053 utils: detect hangup in ofd_access_log_reader

In ofd_access_log_reader, when the batch file is a pipe or socket,
detect hangups and exit.

Signed-off-by: John L. Hammond <jhammond@whamcloud.com>
Change-Id: If7509174b992011305d8e4a7aa2766a3a1980831
Reviewed-on: https://review.whamcloud.com/40311
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>