sysconfig: add zfcp.allow_lun_scan to KDUMP_COMMANDLINE_REMOVE on s390
    
    Resolves: bz2177674
    Upstream: Fedora
    Conflict: Move to kdump.sysconfig.s390 due to missing
              677da8a ("sysconfig: use a simple generator script to maintain")
    
    Author: Philipp Rudo <prudo@redhat.com>
    Date:   Tue Mar 7 14:45:35 2023 +0100
    
        sysconfig: add zfcp.allow_lun_scan to KDUMP_COMMANDLINE_REMOVE on s390
    
        Probing unnecessary I/O devices wastes memory and in extreme cases can
        cause the crashkernel to run OOM. That's why the s390-tools maintain
        their own module, 95zdev-kdump [1], that disables auto LUN scanning and
        only configures zfcp devices that can be used as dump target. So remove
        zfcp.allow_lun_scan from the kernel command line to prevent that we
        accidentally overwrite the default set by the module.
    
        [1] https://github.com/ibm-s390-linux/s390-tools/blob/master/zdev/dracut/95zdev-kdump/module-setup.sh
    
        Signed-off-by: Philipp Rudo <prudo@redhat.com>
        Reviewed-by: Coiby Xu <coxu@redhat.com>
    
    Signed-off-by: Philipp Rudo <prudo@redhat.com>