[PATCH] kdump-lib-initramfs.sh: use -f option for failure_action halt

failure_action halt doesn't work well now. This appears to be similar
to the previous issues such as
b2534348199ad5010c86890a068653d970c9933d and
89565289c64aa5323278cf5722c725a58b369af8.

While I think we need to fix systemd shutdown process in the kdump
kernel so halt works fine, this patch adds -f option for
failure_action halt just as the fixes in each commits.

On the other hand, final_action halt works well.

Signed-off-by: HATAYAMA Daisuke 
---
 kdump-lib-initramfs.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kdump-lib-initramfs.sh b/kdump-lib-initramfs.sh
index 608dc6e..2a36ca7 100755
--- a/kdump-lib-initramfs.sh
+++ b/kdump-lib-initramfs.sh
@@ -59,7 +59,7 @@ get_kdump_confs()
                         FAILURE_ACTION="systemctl reboot -f"
                     ;;
                     halt)
-                        FAILURE_ACTION="halt"
+                        FAILURE_ACTION="halt -f"
                     ;;
                     poweroff)
                         FAILURE_ACTION="systemctl poweroff -f"