Specify larger build node for ccsdk/sli/northbound

Need larger build node for ccsdk/sli/northbound due to unit testing
needs.

Change-Id: I7c49144ba890796728bdc6e48755b91a141af509
Issue-ID: CCSDK-106
Signed-off-by: Dan Timoney <dtimoney@att.com>
diff --git a/jjb/ccsdk/sli-northbound.yaml b/jjb/ccsdk/sli-northbound.yaml
index acc26ab..2e55312 100644
--- a/jjb/ccsdk/sli-northbound.yaml
+++ b/jjb/ccsdk/sli-northbound.yaml
@@ -20,3 +20,4 @@
       deployAtEnd=true
     files: '**'
     archive-artifacts: ''
+    build-node: ubuntu1604-basebuild-4c-4g