Add healthcheck pings to opentofu and add systemd cleanup to healthcheck

roles/healthcheck/files/data/matrix

@@ -8,10 +8,8 @@ import sys
 import asyncio
 from nio import AsyncClient, RoomMessageNotice
 
-healthcheck_url = "https://hc-ping.com/" + os.environ['MATRIX_HC_UID']
-
 def send_ping(success, msg=""):
-    url = healthcheck_url
+    url = os.environ['MATRIX_HC_URL']
     if not success:
         url += "/fail"