Don't exit 1 from 92-crashkernel.install if zipl is absent (#1993505)
    
    upstream: fedora
    related:  bz2003832
    conflict: yes, the upstream patch modified kexec-tools.spec for a
              new fedora release, thus the modification is removed when
              backporting.
    
    commit 5270d40dd0b690d4be628f937e508cdc80dab1d9
    Author: Adam Williamson <awilliam@redhat.com>
    Date:   Tue Aug 31 16:07:51 2021 -0700
    
        Don't exit 1 from 92-crashkernel.install if zipl is absent (#1993505)
    
        At least, this is a plausible suspect for #1993505 - thanks to
        @kevin for identifying it - and fixing it should be safe and
        correct, so we may as well do it and see if it helps.
    
    Signed-off-by: Tao Liu <ltao@redhat.com>