Additional Open Sense detection (#11196)

* Update opnsense.yaml - too add discovery method

Update opnsense.yaml for new OPNsense OID called version.
This will help with detection after the user turns on "Display Verion in OID" within OPNsense

* Re-order to reduce snmp-scan.py time

First, check sysDescr for OPNsense.  Then if sysObjectID is 1.3.6.1.4.1.12325.1.1.2.1.1, run an snmpget

* Create opnsense_1.snmprec

Make up test file since data was not supplied

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

includes/definitions/opnsense.yaml

@@ -9,3 +9,9 @@ over:
 discovery:
     - sysDescr:
         - OPNsense
+    -
+      sysObjectID: .1.3.6.1.4.1.12325.1.1.2.1.1
+      snmpget:
+          oid: .1.3.6.1.4.1.8072.1.3.2.3.1.2.7.118.101.114.115.105.111.110
+          op: contains
+          value: 'OPNsense'