update dmaap zookeeper build node

Issue-ID: DMAAP-1413
Change-Id: Ia671c42188ce19fc6e876e7258dd40d7926efa46
Signed-off-by: su622b <su622b@att.com>
diff --git a/jjb/dmaap/dmaap-zookeeper.yaml b/jjb/dmaap/dmaap-zookeeper.yaml
index e17fbe0..4a0b523 100644
--- a/jjb/dmaap/dmaap-zookeeper.yaml
+++ b/jjb/dmaap/dmaap-zookeeper.yaml
@@ -15,7 +15,7 @@
     project-name: 'dmaap-zookeeper-docker'
     jobs:
       - gerrit-maven-docker-stage:
-          build-node: ubuntu1604-docker-8c-8g
+          build-node: ubuntu1804-docker-8c-8g
           mvn-params: '-P docker -Dmaven.test.skip=true'
           maven-versions-plugin: true
           container-public-registry: 'nexus3.onap.org:10001'
@@ -31,7 +31,7 @@
     archive-artifacts: ''
     docker-pom: 'pom.xml'
     mvn-profile: 'docker'
-    build-node: ubuntu1604-docker-8c-8g
+    build-node: ubuntu1804-docker-8c-8g
 
 - project:
     name: dmaap-zookeeper-info