Set build node for gerrit-maven-sonar

Run gerrit-maven-sonar on a 4c-4g node

Issue-ID: CIMAN-126
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I8a50b075ab6c1da5b015136b30a8aa2fab5bbc9a
diff --git a/jjb/msb/msb-discovery.yaml b/jjb/msb/msb-discovery.yaml
index 3df0f03..1c46883 100644
--- a/jjb/msb/msb-discovery.yaml
+++ b/jjb/msb/msb-discovery.yaml
@@ -27,6 +27,7 @@
     name: msb-discovery-sonar
     jobs:
       - gerrit-maven-sonar
+    build-node: ubuntu1604-basebuild-4c-4g
     java-version: ''
     project: 'msb/discovery'
     project-name: 'msb-discovery'