Move SDC to Ubunto1804 nodes

Change-Id: Icd22b2bb30f51b81e79f3ac8d002a283bbb3b1e7
Issue-ID: SDC-2857
Signed-off-by: Ofir Sonsino <os0695@intl.att.com>
diff --git a/jjb/sdc/sdc-microservices.yaml b/jjb/sdc/sdc-microservices.yaml
index cf843d6..0aad248 100644
--- a/jjb/sdc/sdc-microservices.yaml
+++ b/jjb/sdc/sdc-microservices.yaml
@@ -45,7 +45,7 @@
     sonarcloud-project-key: '{sonarcloud_project_organization}_{project-name}'
     sonar-mvn-goal: "org.sonarsource.scanner.maven:sonar-maven-plugin:3.6.0.1398:sonar"
     cron: '@daily'
-    build-node: ubuntu1604-builder-4c-4g
+    build-node: ubuntu1804-builder-4c-4g
     project: 'sdc/microservices'
     project-name: 'sdc-microservices'
     branch: 'master'