Refactor systemctl services and categories due to alarm bugs

This commit restructures systemctl service definitions and category mappings.

Motivation: Alarm-related bugs revealed inconsistencies in service and role handling.

Preparation step: lays the groundwork for fixing the alarm issues by aligning categories, roles, and service templates.

roles/sys-ctl-hlth-disc-space/files/sys-ctl-hlth-disc-space.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# @param $1 mimimum free disc space
+errors=0
+minimum_percent_cleanup_disc_space="$1"
+echo "checking disc space use..."
+df
+for disc_use_percent in $(df --output=pcent | sed 1d)
+do
+    disc_use_percent_number=$(echo "$disc_use_percent" | sed "s/%//")
+    if [ "$disc_use_percent_number" -gt "$minimum_percent_cleanup_disc_space" ]; then
+      echo "WARNING: $disc_use_percent_number exceeds the limit of $minimum_percent_cleanup_disc_space%."
+      errors+=1;
+    fi
+done
+exit $errors;