Add a set of unit tests for openstack telemetry app

Change-Id: Ib5963c61ef0c0302a90a4f30d3dd1f0ec2862aea
diff --git a/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/codec/TinaFlowInfoByteBufferCodecTest.java b/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/codec/TinaFlowInfoByteBufferCodecTest.java
index 9e3294d..8f4af77 100644
--- a/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/codec/TinaFlowInfoByteBufferCodecTest.java
+++ b/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/codec/TinaFlowInfoByteBufferCodecTest.java
@@ -55,6 +55,9 @@
     private final TinaFlowInfoByteBufferCodec codec =
             new TinaFlowInfoByteBufferCodec();
 
+    /**
+     * Initial setup for this unit test.
+     */
     @Before
     public void setup() {
         StatsInfo statsInfo = new DefaultStatsInfo.DefaultBuilder().build();