[ONOS-4837] NETCONF function for FUJITSU OLT #4 and #5

- Add the following commands for FJ OLT
  volt-onus <netconf:target> <ONU ID>
  volt-setonu <netconf:target> <ONU-ID:parameter type:parameter value>
  volt-onustats <netconf:target> {ONU-ID}
  volt-rebootonu <netconf:target> <ONU-ID>
  volt-ethloopback <netconf:target> <ONU-ETH-ID[:loopback mode]>
- Add the method of doUserRpc() in Netconfsession/NetconfSessionImpl
   *If you dont allow to implement the method, i can move it to our XmlUtility method.
- Add new behaviours in /core/.../net/behaviour, and @Beta in the interface.
- Move those behaviour interface to fujitsu driver directory.
   * VoltPonLinkConfig.java as well.
- Update fujitsu-drivers.xml
- Change the method name from doUserRpc to doWrappedRpc

Change-Id: Ic39d3a11ba35d2377e552af097eda65c5554c63f
diff --git a/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/cli/VoltGetOnuStatsCommand.java b/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/cli/VoltGetOnuStatsCommand.java
new file mode 100644
index 0000000..0888af1
--- /dev/null
+++ b/drivers/fujitsu/src/main/java/org/onosproject/drivers/fujitsu/cli/VoltGetOnuStatsCommand.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2016-present Open tworking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.drivers.fujitsu.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.DeviceId;
+import org.onosproject.drivers.fujitsu.behaviour.VoltOnuConfig;
+import org.onosproject.net.driver.DriverHandler;
+import org.onosproject.net.driver.DriverService;
+
+/**
+ * Gets ONU statistics in vOLT.
+ */
+@Command(scope = "onos", name = "volt-onustats",
+        description = "Gets ONU statistics in vOLT")
+public class VoltGetOnuStatsCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "uri", description = "Device ID",
+            required = true, multiValued = false)
+    String uri = null;
+
+    @Argument(index = 1, name = "target", description = "PON link ID-ONU ID",
+            required = false, multiValued = false)
+    String target = null;
+
+    private DeviceId deviceId;
+
+    @Override
+    protected void execute() {
+        DriverService service = get(DriverService.class);
+        deviceId = DeviceId.deviceId(uri);
+        DriverHandler h = service.createHandler(deviceId);
+        VoltOnuConfig volt = h.behaviour(VoltOnuConfig.class);
+        String reply = volt.getOnuStatistics(target);
+        if (reply != null) {
+            print("%s", reply);
+        } else {
+            print("No reply from %s", deviceId.toString());
+        }
+    }
+
+}