Migrate CCSDK,SDNC to ubuntu 18.04 build nodes

Migrate all CCSDK and SDNC jobs from Ubuntu 16.04 to 18.04 build nodes

Change-Id: I6707ceb61b036b64340a27fbd9943ae3ed202b61
Issue-ID: CIMAN-374
Signed-off-by: Dan Timoney <dtimoney@att.com>
diff --git a/jjb/ccsdk/sli-core.yaml b/jjb/ccsdk/sli-core.yaml
index 946a4fb..0fc6d6c 100644
--- a/jjb/ccsdk/sli-core.yaml
+++ b/jjb/ccsdk/sli-core.yaml
@@ -31,7 +31,7 @@
     files: '**'
     archive-artifacts: ''
     maven-version: "mvn35"
-    build-node: ubuntu1604-builder-4c-4g
+    build-node: ubuntu1804-builder-4c-4g
     mvn-snapshot-id: 'ecomp-snapshots'
     nexus-snapshot-repo: 'snapshots'
 
@@ -45,7 +45,7 @@
     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: 'ccsdk/sli/core'
     project-name: 'ccsdk-sli-core'
     branch: 'master'
@@ -68,7 +68,7 @@
           branch: 'frankfurt'
     mvn-settings: 'ccsdk-sli-core-settings'
     maven-version: "mvn35"
-    build-node: ubuntu1604-builder-4c-4g
+    build-node: ubuntu1804-builder-4c-4g
 
 
 - project: