Refactoring file structure for protobufs.

Change-Id: I50daf100d54750f97158304d87813e67861b1422
diff --git a/apps/kafka-integration/core/pom.xml b/apps/kafka-integration/core/pom.xml
index 2974fa6..683e9c7 100644
--- a/apps/kafka-integration/core/pom.xml
+++ b/apps/kafka-integration/core/pom.xml
@@ -66,7 +66,7 @@
 
         <dependency>
             <groupId>org.onosproject</groupId>
-            <artifactId>onos-incubator-protobuf</artifactId>
+            <artifactId>onos-incubator-protobuf-models</artifactId>
             <version>${project.version}</version>
         </dependency>