Add new push notification scheduler

features/device-mgt/org.wso2.carbon.device.mgt.server.feature/src/main/resources/conf/cdm-config.xml

@@ -25,12 +25,17 @@
             </JndiLookupDefinition>
         </DataSourceConfiguration>
     </ManagementRepository>
+    <PushNotificationConfiguration>
+        <SchedulerBatchSize>1</SchedulerBatchSize>
+        <SchedulerBatchDelayMills>1000</SchedulerBatchDelayMills>
+        <SchedulerTaskEnabled>true</SchedulerTaskEnabled>
         <PushNotificationProviders>
             <Provider>org.wso2.carbon.device.mgt.extensions.push.notification.provider.fcm.FCMBasedPushNotificationProvider</Provider>
             <!--<Provider>org.wso2.carbon.device.mgt.mobile.impl.ios.apns.APNSBasedPushNotificationProvider</Provider>-->
             <Provider>org.wso2.carbon.device.mgt.extensions.push.notification.provider.mqtt.MQTTBasedPushNotificationProvider</Provider>
             <Provider>org.wso2.carbon.device.mgt.extensions.push.notification.provider.xmpp.XMPPBasedPushNotificationProvider</Provider>
         </PushNotificationProviders>
+    </PushNotificationConfiguration>
     <IdentityConfiguration>
         <ServerUrl>https://localhost:9443</ServerUrl>
         <AdminUsername>admin</AdminUsername>