Fixing kafka name in requirements.yaml

Change-Id: I00ee2e8e9ea859a170c00d0523bbdffe9c0d0418
diff --git a/cord-platform/requirements.yaml b/cord-platform/requirements.yaml
index 02cc4c7..99f5daf 100644
--- a/cord-platform/requirements.yaml
+++ b/cord-platform/requirements.yaml
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 dependencies:
-- name: incubator/kafka
+- name: kafka
   version: 0.8.8
   repository: http://storage.googleapis.com/kubernetes-charts-incubator
 - name: onos