Switch voltha-protos over to the new ami image

Change-Id: Ic7b23c9fa4f8108da087261719110a95f50d25ac
diff --git a/jjb/verify/voltha-protos.yaml b/jjb/verify/voltha-protos.yaml
index eafc6b1..b40508d 100644
--- a/jjb/verify/voltha-protos.yaml
+++ b/jjb/verify/voltha-protos.yaml
@@ -19,7 +19,8 @@
       - 'verify-licensed'
       - 'tag-collision-reject':
       - 'make-unit-test':
-          build-node: 'ubuntu18.04-basebuild-2c-4g'
+#          build-node: 'ubuntu18.04-basebuild-2c-4g'
+          build-node: 'voltha-1804-micro'
           build-timeout: 20
           unit-test-targets: 'test'
           unit-test-keep-going: 'false'