kdump-lib: fix the matching pattern for debug-kernel
    
    Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2165839
    Upstream: Fedora
    Conflict: None
    
    commit 81d3cc344d20cee900396bb02977d1cbe8a11034
    Author: Pingfan Liu <piliu@redhat.com>
    Date:   Thu Apr 20 11:26:34 2023 +0800
    
        kdump-lib: fix the matching pattern for debug-kernel
    
        On aarch64, a 64k kernel's name looks like:
        vmlinuz-5.14.0-300.el9.aarch64+64k and the corresponding debug kernel's
        name looks like: vmlinuz-5.14.0-300.el9.aarch64+64k-debug, which ends
        with the suffix -debug instead of +debug.
    
        Fix the matching pattern by [+|-]debug
    
        Signed-off-by: Pingfan Liu <piliu@redhat.com>
        Reviewed-by: Philipp Rudo <prudo@redhat.com>
    
    Signed-off-by: Pingfan Liu <piliu@redhat.com>