monit: overwrite to ensure no appending is done

monit-ceph-create-start

@@ -22,7 +22,7 @@ id=$(echo $to_monitor | awk -F . '{ print $2 }')
 case "$daemon" in
     osd)
         depends="${depends}, ${to_monitor}-whoami"
-    cat >> "$conf" <<EOF
+    cat > "$conf" <<EOF
 check file ${to_monitor}-whoami with path /var/lib/ceph/osd/ceph-${id}/whoami
  if content != "${id}" then alert
 EOF