[PATCH] kdump-lib.sh: Fix is_user_configured_dump_target()

[HAGIO KAZUHITO(萩尾 一仁)]

Currently, is_user_configured_dump_target() doesn't work as expected
due to lack of grep -E option.

As a result, kdump service with a ssh dump configuration can unnecessarily
fail to start due to the non-existence of a directory at where the path
option specifies on the local system:

kdumpctl[9760]: Rebuilding /boot/initramfs-5.4.19-200.fc31.x86_64kdump.img
  kdumpctl[9760]: Dump path /var/crash/ssh does not exist.
  kdumpctl[9760]: mkdumprd: failed to make kdump initrd
  kdumpctl[9760]: Starting kdump: [FAILED]

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

diff --git a/kdump-lib.sh b/kdump-lib.sh
index 2428b5d..9c41439 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -117,7 +117,7 @@ to_dev_name() {

is_user_configured_dump_target()
 {
-    grep -q "^ext[234]|^xfs|^btrfs|^minix|^raw|^nfs|^ssh" /etc/kdump.conf || is_mount_in_dracut_args;
+    grep -E -q "^ext[234]|^xfs|^btrfs|^minix|^raw|^nfs|^ssh" /etc/kdump.conf || is_mount_in_dracut_args;
 }

get_user_configured_dump_disk()