Fix DHCP relay maven build error

Change-Id: Ic5cd8af6e50b8915503ef9817d572f6f8b304814
diff --git a/tools/build/publish-test-target-list b/tools/build/publish-test-target-list
index 68f3a88..278cf60 100644
--- a/tools/build/publish-test-target-list
+++ b/tools/build/publish-test-target-list
@@ -1,4 +1,5 @@
 # Targets placed in this list will be published as Maven test artifacts
+    //incubator/api:onos-incubator-api-tests
     //utils/osgi:onlab-osgi-tests
     //utils/junit:onlab-junit-tests
     //utils/misc:onlab-misc-tests