Send notification if stale lock is detected

add send notification along with e-mail notification on stale lock
check.

Signed-off-by: Josenivaldo Benito Jr <jrbenito@benito.qsl.br>

duplicity-backup.sh

@@ -439,6 +439,7 @@ get_lock()
       echo "lock failed, could not acquire ${LOCKFILE}" | tee -a "${LOGFILE}" >&2
       echo "lock held by $(cat "${LOCKFILE}")" | tee -a "${LOGFILE}" >&2
       email_logfile
+      send_notification
       exit 2
   fi
 }