Revert "Change build node to centos7-docker-8c-8g"

This reverts commit c4d737e720974c872b965230515da08e18a70427.

Issue-ID: DCAEGEN2-1889
Change-Id: I2ddbd9e30fb0acbfeb2501756808e259129ea459
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/dcaegen2/dcaegen2-services-prh.yaml b/jjb/dcaegen2/dcaegen2-services-prh.yaml
index 0a1f19a..cb9130f 100644
--- a/jjb/dcaegen2/dcaegen2-services-prh.yaml
+++ b/jjb/dcaegen2/dcaegen2-services-prh.yaml
@@ -10,7 +10,7 @@
           build-node: centos7-docker-8c-8g
           maven-versions-plugin: true
       - gerrit-maven-docker-stage:
-          build-node: centos7-docker-8c-8g
+          build-node: ubuntu1604-docker-8c-8g
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
           mvn-goals: 'clean package docker:build docker:push'