Update AAI jjbs to use ubuntu 1804

Issue-ID: AAI-2849
Change-Id: Ic808db184eb6536b6b60f04e1750633bd8bd44fb
Signed-off-by: Jimmy Forsyth <jf2512@att.com>
diff --git a/jjb/aai/aai-search-data-service.yaml b/jjb/aai/aai-search-data-service.yaml
index a780e9c..fbcb6be 100644
--- a/jjb/aai/aai-search-data-service.yaml
+++ b/jjb/aai/aai-search-data-service.yaml
@@ -17,7 +17,7 @@
           maven-versions-plugin: true
       - gerrit-maven-docker-stage:
           mvn-params: '-Pdocker -B -Dmaven.test.skip=true'
-          build-node: ubuntu1604-docker-8c-8g
+          build-node: ubuntu1804-docker-8c-8g
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
       - '{project-name}-gerrit-release-jobs':
@@ -39,7 +39,7 @@
     jobs:
       - gerrit-maven-docker-stage:
           mvn-params: '-Pdocker -B -Dmaven.test.skip=true'
-          build-node: ubuntu1604-docker-8c-8g
+          build-node: ubuntu1804-docker-8c-8g
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
     project: 'aai/search-data-service'
@@ -61,7 +61,7 @@
     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: 'aai/search-data-service'
     project-name: 'aai-search-data-service'
     branch: 'master'
@@ -93,7 +93,7 @@
 - project:
     name: 'aai-search-data-service-whitesource'
     project-name: 'aai-search-data-service'
-    build-node: ubuntu1604-docker-8c-8g
+    build-node: ubuntu1804-docker-8c-8g
     jobs:
       - gerrit-whitesource-scan
     mvn-settings: 'aai-search-data-service-settings'