dracut-kdump.sh: don't put KDUMP_SCRIPT_DIR in PATH
    
    upstream: fedora
    resolves: bz2003832
    conflict: none
    
    commit 0675edbadb2320b8809aa8751b356ccafc78d857
    Author: Kairui Song <kasong@redhat.com>
    Date:   Mon Aug 2 01:19:44 2021 +0800
    
        dracut-kdump.sh: don't put KDUMP_SCRIPT_DIR in PATH
    
        monitor_dd_progress is the only extra binary in KDUMP_SCRIPT_DIR, no
        need to change PATH environment variable, just call it directly.
    
        Signed-off-by: Kairui Song <kasong@redhat.com>
        Acked-by: Philipp Rudo <prudo@redhat.com>
    
    Signed-off-by: Tao Liu <ltao@redhat.com>