Fix Ubuntu18 build-nodes

We only have 4c-4g builder node for Ubuntu18
Fix build node names

Change-Id: I6eab56062751c2c77a1b03b48343bd7a49bf3bdd
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/ccsdk/features.yaml b/jjb/ccsdk/features.yaml
index d5fb682..b4a116a 100644
--- a/jjb/ccsdk/features.yaml
+++ b/jjb/ccsdk/features.yaml
@@ -79,7 +79,7 @@
 
 - project:
     name: ccsdk-features-whitesource
-    build-node: ubuntu1804-builder-8c-8g
+    build-node: ubuntu1804-builder-4c-4g
     project-name: ccsdk-features
     jobs:
       - gerrit-whitesource-scan