Add LinkInfo and LinkStatsInfo JSON codec with unit tests

Change-Id: I9c9f50496c55f617438dab3641ce43354352dff6
diff --git a/apps/openstacktelemetry/app/BUILD b/apps/openstacktelemetry/app/BUILD
index 91fd5aa..e4422bc 100644
--- a/apps/openstacktelemetry/app/BUILD
+++ b/apps/openstacktelemetry/app/BUILD
@@ -23,6 +23,7 @@
 TEST_DEPS = TEST_ADAPTERS + [
     "//core/api:onos-api-tests",
     "//core/common:onos-core-common-tests",
+    "//apps/openstacktelemetry/api:onos-apps-openstacktelemetry-api-tests",
 ]
 
 osgi_jar_with_tests(