ioprocess: reduce log level to INFO

Change-Id: Ifd51379e172251f439f7fb2062dab75127c0d63e
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1170510
Signed-off-by: Yeela Kaplan <ykaplan@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/35929
Reviewed-by: Saggi Mizrahi <smizrahi@redhat.com>