Update building node for multicloud jobs

Issue-ID: MULTICLOUD-1034
Signed-off-by: Bin Yang <bin.yang@windriver.com>
Change-Id: I830d710ce89910b428b324fef8032f498d0595ea
diff --git a/jjb/multicloud/multicloud-azure-python.yaml b/jjb/multicloud/multicloud-azure-python.yaml
index 5066a4c..8aec29b 100644
--- a/jjb/multicloud/multicloud-azure-python.yaml
+++ b/jjb/multicloud/multicloud-azure-python.yaml
@@ -7,7 +7,7 @@
       - 'master':
           branch: 'master'
     mvn-settings: 'multicloud-azure-settings'
-    build-node: 'ubuntu1604-builder-4c-4g'
+    build-node: 'ubuntu1804-builder-4c-4g'
     subproject:
       - 'azure':
           path: 'azure'