Chore: Use a smaller node for release jobs

This is in order to save some costs since these jobs
do not require a 8c-8g node

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: Id0ec9e33ac4bc1c7c63dbd6bc7671c47aec996fa
diff --git a/jjb/aai/aai-graphgraph.yaml b/jjb/aai/aai-graphgraph.yaml
index bac59be..eb9e75f 100644
--- a/jjb/aai/aai-graphgraph.yaml
+++ b/jjb/aai/aai-graphgraph.yaml
@@ -23,7 +23,7 @@
           container-public-registry: 'nexus3.onap.org:10001'
           container-staging-registry: 'nexus3.onap.org:10003'
       - '{project-name}-gerrit-release-jobs':
-          build-node: centos7-docker-8c-8g
+          build-node: centos7-docker-2c-1g
     project: 'aai/graphgraph'
     stream:
       - 'master':