Updating test sources in several BUCK files

Change-Id: I17b83cb978f7b8fc1d31a1e96bec59a077dbdfbb
diff --git a/incubator/api/BUCK b/incubator/api/BUCK
index 13fd42b..f2a0cd5 100644
--- a/incubator/api/BUCK
+++ b/incubator/api/BUCK
@@ -1,5 +1,5 @@
 SRC = 'src/main/java/org/onosproject/incubator/**/'
-TEST = 'src/main/java/org/onosproject/incubator/**/'
+TEST = 'src/test/java/org/onosproject/incubator/**/'
 CURRENT_NAME = 'onos-incubator-api'
 CURRENT_TARGET = ':' + CURRENT_NAME