iscsi/iscsiroot.sh: do not mount manually in systemd mode

modules.d/95iscsi/iscsiroot.sh

@@ -145,7 +145,8 @@ handle_netroot()
         wait_for_dev /dev/root
 
         # install mount script
-        echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > $hookdir/mount/01-$$-iscsi.sh
+        [ -z "$DRACUT_SYSTEMD" ] && \
+            echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > $hookdir/mount/01-$$-iscsi.sh
     fi
 
     # force udevsettle to break

modules.d/95iscsi/module-setup.sh

@@ -78,6 +78,8 @@ install() {
     inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
     inst_hook cleanup 90 "$moddir/cleanup-iscsi.sh"
     inst "$moddir/iscsiroot.sh" "/sbin/iscsiroot"
-    inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
+    if ! dracut_module_included "systemd"; then
+        inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
+    fi
     dracut_need_initqueue
 }