Build verify-vagrantfile job on Ubuntu 18.04 minion

Change-Id: I59fcc6af9cfb085044504fe61158003414d35dd1
Issue-ID: INT-1427
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
diff --git a/jjb/integration/integration-templates.yaml b/jjb/integration/integration-templates.yaml
index f5f3a1d..7d9ffed 100644
--- a/jjb/integration/integration-templates.yaml
+++ b/jjb/integration/integration-templates.yaml
@@ -8,7 +8,7 @@
     name: '{project-name}-{stream}-verify-vagrantfile'
     project-type: freestyle
     description: 'Job intended for validating vagrantfiles'
-    node: ubuntu1604-builder-2c-1g
+    node: ubuntu1804-builder-4c-4g
 
     parameters:
       - lf-infra-parameters: