kdump-lib: Add the CoreOS kernel dir to the boot_dirlist
    
    Resolves: bz2174836
    Upstream: Fedora
    Conflict: None
    
    commit f9c32372d2c8d5e58024d2ddc0b70498c696b5d8
    Author: Lichen Liu <lichliu@redhat.com>
    Date:   Tue Jun 21 16:55:09 2022 +0800
    
        kdump-lib: Add the CoreOS kernel dir to the boot_dirlist
    
        The kernel of CoreOS is not in the standard locations, add
        /boot/ostree/* to the boot_dirlist to find the vmlinuz.
    
        Signed-off-by: Lichen Liu <lichliu@redhat.com>
        Acked-by: Coiby Xu <coxu@redhat.com>
    
    Signed-off-by: Lichen Liu <lichliu@redhat.com>