Migrate to ubuntu1804-docker

Migrate the rest of the jobs from
ubuntu1604-docker to ubuntu1804-docker
Remove unused nodes

Issue-ID: CIMAN-373
Change-Id: Idec34497cec90f650336cdd2dcfc8aaae2bcd2ec
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/holmes/holmes-engine-mgt.yaml b/jjb/holmes/holmes-engine-mgt.yaml
index cb23377..b00e788 100644
--- a/jjb/holmes/holmes-engine-mgt.yaml
+++ b/jjb/holmes/holmes-engine-mgt.yaml
@@ -11,7 +11,7 @@
           maven-versions-plugin: true
       - '{project-name}-{stream}-docker-java-daily':
           mvn-params: '-Dmaven.test.skip=true'
-          build-node: ubuntu1604-docker-8c-8g
+          build-node: ubuntu1804-docker-8c-8g
       - '{project-name}-gerrit-release-jobs':
           build-node: centos7-docker-8c-8g
     project: 'holmes/engine-management'