Refactor some core testing adapters to not be in the openflow hierarchy

Change-Id: Ia2604337e4b9a7bfa4f6c3c06c5defc499143cba
diff --git a/protocols/openflow/api/pom.xml b/protocols/openflow/api/pom.xml
index ef41b40..f5be0a6 100644
--- a/protocols/openflow/api/pom.xml
+++ b/protocols/openflow/api/pom.xml
@@ -46,6 +46,13 @@
             <groupId>org.onosproject</groupId>
             <artifactId>onos-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-api</artifactId>
+            <scope>test</scope>
+            <classifier>tests</classifier>
+            <version>${project.version}</version>
+        </dependency>
 
     </dependencies>