Refactoring file structure for protobufs.

Change-Id: I50daf100d54750f97158304d87813e67861b1422
diff --git a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/DeviceProviderServiceClientProxy.java b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/DeviceProviderServiceClientProxy.java
index bd133ad..4f41835 100644
--- a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/DeviceProviderServiceClientProxy.java
+++ b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/DeviceProviderServiceClientProxy.java
@@ -17,7 +17,7 @@
 
 import static com.google.common.base.Preconditions.checkNotNull;
 import static java.util.stream.Collectors.toList;
-import static org.onosproject.incubator.protobuf.net.ProtobufUtils.translate;
+import static org.onosproject.incubator.protobuf.models.ProtobufUtils.translate;
 import static org.onosproject.net.DeviceId.deviceId;
 
 import java.util.Collection;
@@ -31,7 +31,7 @@
 import org.onosproject.grpc.net.device.DeviceService.IsReachableRequest;
 import org.onosproject.grpc.net.device.DeviceService.RoleChanged;
 import org.onosproject.grpc.net.device.DeviceService.TriggerProbe;
-import org.onosproject.incubator.protobuf.net.ProtobufUtils;
+import org.onosproject.incubator.protobuf.models.ProtobufUtils;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
 import org.onosproject.net.device.DeviceDescription;
diff --git a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/GrpcRemoteServiceServer.java b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/GrpcRemoteServiceServer.java
index 2604d09..2f5be39 100644
--- a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/GrpcRemoteServiceServer.java
+++ b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/GrpcRemoteServiceServer.java
@@ -18,7 +18,7 @@
 import static com.google.common.base.Preconditions.checkNotNull;
 import static java.util.concurrent.Executors.newScheduledThreadPool;
 import static java.util.stream.Collectors.toList;
-import static org.onosproject.incubator.protobuf.net.ProtobufUtils.translate;
+import static org.onosproject.incubator.protobuf.models.ProtobufUtils.translate;
 import static org.onosproject.net.DeviceId.deviceId;
 
 import java.io.IOException;
@@ -50,7 +50,7 @@
 import org.onosproject.grpc.net.device.DeviceService.RegisterProvider;
 import org.onosproject.grpc.net.device.DeviceService.UpdatePortStatistics;
 import org.onosproject.grpc.net.device.DeviceService.UpdatePorts;
-import org.onosproject.incubator.protobuf.net.ProtobufUtils;
+import org.onosproject.incubator.protobuf.models.ProtobufUtils;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
 import org.onosproject.net.PortNumber;
diff --git a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceClientProxy.java b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceClientProxy.java
index 0a8918e..78f9f37 100644
--- a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceClientProxy.java
+++ b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceClientProxy.java
@@ -15,7 +15,7 @@
  */
 package org.onosproject.incubator.rpc.grpc;
 
-import static org.onosproject.incubator.protobuf.net.ProtobufUtils.asMap;
+import static org.onosproject.incubator.protobuf.models.ProtobufUtils.asMap;
 
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
diff --git a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceServerProxy.java b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceServerProxy.java
index 26210f6..69f9cfd 100644
--- a/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceServerProxy.java
+++ b/incubator/rpc-grpc/src/main/java/org/onosproject/incubator/rpc/grpc/LinkProviderServiceServerProxy.java
@@ -31,7 +31,7 @@
 import org.onosproject.grpc.net.link.LinkService.LinkDetectedMsg;
 import org.onosproject.grpc.net.link.LinkService.LinkVanishedMsg;
 import org.onosproject.grpc.net.link.LinkService.Void;
-import org.onosproject.incubator.protobuf.net.ProtobufUtils;
+import org.onosproject.incubator.protobuf.models.ProtobufUtils;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.Link;