Update MUSIC jobs to Ubuntu 1804

Issue-ID: MUSIC-575
Signed-off-by: Tschaen, Brendan <ctschaen@att.com>
Change-Id: Ie62aed2eb443377442afde2f513fc3c4240eda19
diff --git a/jjb/music/music.yaml b/jjb/music/music.yaml
index b89c750..fb7bdd8 100644
--- a/jjb/music/music.yaml
+++ b/jjb/music/music.yaml
@@ -16,7 +16,7 @@
           build-node: centos7-builder-4c-4g
           maven-versions-plugin: true
       - gerrit-maven-docker-stage:
-          build-node: ubuntu1604-docker-8c-8g
+          build-node: ubuntu1804-docker-8c-8g
           maven-versions-plugin: true
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
@@ -32,7 +32,7 @@
     mvn-settings: 'music-settings'
     files: '**'
     archive-artifacts: ''
-    build-node: ubuntu1604-builder-4c-4g
+    build-node: ubuntu1804-builder-4c-4g
 
 - project:
     name: music-sonar
@@ -44,7 +44,7 @@
     sonarcloud-project-key: '{sonarcloud_project_organization}_{project-name}'
     sonar-mvn-goal: '{sonar_mvn_goal}'
     cron: '@daily'
-    build-node: ubuntu1604-builder-4c-4g
+    build-node: ubuntu1804-builder-4c-4g
     project: 'music'
     project-name: 'music'
     branch: 'master'