Added timeDiscovery to extraData fields.

src/FTTHBundle/Entity/OLT.php

@@ -443,6 +443,7 @@ class OLT implements DeviceInterface, TenancyIdTraitInterface, LocationInterface
         $deviceExtraData['timeOnuStats'] = $this->timeOnuStats;
         $deviceExtraData['timePonStats'] = $this->timePonStats;
         $deviceExtraData['timeOltOctets'] = $this->timeOltOctets;
+        $deviceExtraData['timeDiscovery'] = $this->timeDiscovery;
 
         $deviceData['extraData'] = json_encode($deviceExtraData);