Enable zstd compression for makedumpfile in kexec-tools.spec
    
    upstream: fedora
    resolves: bz2008397
    conflict: none
    
    commit 9ffda5bc1c789d00737ebe9b554691d029ecf492
    Author: Tao Liu <ltao@redhat.com>
    Date:   Wed Nov 10 16:56:53 2021 +0800
    
        Enable zstd compression for makedumpfile in kexec-tools.spec
    
        The Zstandard (zstd) compression method is not enabled:
    
            $ makedumpfile -v
            makedumpfile: version 1.7.0 (released on 8 Nov 2021)
            lzo         enabled
            snappy      enabled
            zstd        disabled
    
        This patch will enable it when building kexec-tools rpm package.
    
        Signed-off-by: Tao Liu <ltao@redhat.com>
        Acked-by: Coiby Xu <coxu@redhat.com>
    
    Signed-off-by: Tao Liu <ltao@redhat.com>