Refactoring file structure for protobufs.

Change-Id: I50daf100d54750f97158304d87813e67861b1422
diff --git a/incubator/protobuf/services/nb/pom.xml b/incubator/protobuf/services/nb/pom.xml
new file mode 100644
index 0000000..5e658e8
--- /dev/null
+++ b/incubator/protobuf/services/nb/pom.xml
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2017-present Open Networking 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>onos-incubator-protobuf-services</artifactId>
+        <groupId>org.onosproject</groupId>
+        <version>1.11.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-incubator-protobuf-services-nb</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS northbound gRPC services</description>
+    <url>http://onosproject.org</url>
+
+    <properties>
+        <onos.app.name>org.onosproject.incubator.protobuf.services.nb</onos.app.name>
+        <onos.app.title>ONOS gRPC Northbound Services</onos.app.title>
+    </properties>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-incubator-protobuf-models</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.karaf.tooling</groupId>
+                    <artifactId>karaf-maven-plugin</artifactId>
+                    <version>3.0.8</version>
+                    <extensions>true</extensions>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+
+        <plugins>
+            <!-- TODO This is included to suppress the generation of javadocs for
+                this package. There is a problem when we try to package the
+                auto-generated code's javadoc into a jar. -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <configuration>
+                    <sourcepath>${basedir}/src/main/java/</sourcepath>
+                    <excludePackageNames>org.onosproject.incubator.rpc.grpc</excludePackageNames>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-bundle-plugin</artifactId>
+                <extensions>true</extensions>
+                <configuration>
+                    <instructions>
+                        <Export-Package>org.onosproject.grpc.net,org.onosproject.incubator.protobuf.services.nb</Export-Package>
+                    </instructions>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-scr-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.xolstice.maven.plugins</groupId>
+                <artifactId>protobuf-maven-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.onosproject</groupId>
+                <artifactId>onos-maven-plugin</artifactId>
+            </plugin>
+
+        </plugins>
+    </build>
+
+</project>