Fortimail add mail queues message count (#15444)

* Update fortimail.yaml

Added mail queues message count

* Update fortimail.snmprec

Update test data for FortiMail queues

* Add sensors fortimail.json

---------

Co-authored-by: Tony Murray <murraytony@gmail.com>

includes/definitions/discovery/fortimail.yaml

@@ -15,3 +15,12 @@ modules:
                 oid: fmlSysCpuUsage
                 num_oid: '.1.3.6.1.4.1.12356.105.1.6.{{ $index }}'
                 type: fortimail
+    sensors:
+        count:
+            data:
+                -
+                    oid: fmlMailQueueEntry
+                    value: fmlMailQueueMailCount
+                    num_oid: '.1.3.6.1.4.1.12356.105.1.103.2.1.3.{{ $index }}'
+                    index: 'fmlMailQueueIndex.{{ $index }}'
+                    descr: '{{ $fmlMailQueueName }}'