fix: deb卸载systemctl操作判断

debbuild/DEBIAN/preinst

@@ -1,14 +1,14 @@
 # !/bin/bash
 
-echo -n "Stopping OMC service ... "
 systemctl daemon-reload
 if systemctl list-units --type=service --all | grep -q 'restagent.service'; then
+    echo -n "Stopping OMC service ... "
     systemctl stop restagent.service
     systemctl stop crontask.service
     systemctl stop sshsvc.service
     systemctl stop captrace.service
+    echo "done"
 fi
-echo "done"
 
 FERootDir=/usr/local/omc/htdocs/front