Move release jobs to docker node

Move release jobs to docker node since these
repos will start using self container releases

Change-Id: If335d12375863b3809e0d1335310a3eaeefea154
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/so/so.yaml b/jjb/so/so.yaml
index 6ff962e..21e9c64 100644
--- a/jjb/so/so.yaml
+++ b/jjb/so/so.yaml
@@ -22,7 +22,7 @@
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
       - '{project-name}-gerrit-release-jobs':
-          build-node: centos7-builder-4c-4g
+          build-node: centos7-docker-8c-8g
     project: 'so'
     stream:
       - 'master':