[kexec-tools/f18] enable pipefail bash option

[Dave Young]

commit e36d4ab60d2a37853db51911ae29559403514f11
Author: Dave Young <dyoung at redhat.com>
Date:   Wed Dec 19 15:45:05 2012 +0800

    enable pipefail bash option
    
    Follwing code will not return 1 if CORE_COLLECTOR /proc/vmcore fail:
    $CORE_COLLECTOR /proc/vmcore | ssh $_opt $2 "dd bs=512 of=$_dir/vmcore-incomplete" || return 1
    
    Fix it by enabling pipefail option
    
    Tested in F18 with ssh dump.
    
    Signed-off-by: Dave Young <dyoung at redhat.com>
    Acked-by: Baoquan He <bhe at redhat.com>

 dracut-kdump.sh |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/dracut-kdump.sh b/dracut-kdump.sh
index 2a7e956..3ced67a 100755
--- a/dracut-kdump.sh
+++ b/dracut-kdump.sh
@@ -2,6 +2,7 @@
 
 . /lib/dracut-lib.sh
 
+set -o pipefail
 set -x
 KDUMP_PATH="/var/crash"
 CORE_COLLECTOR=""