Update APPC maven-stage jobs

- Run on centos docker 8c-8g nodes
- Sign artifacts
- Use versions plugin

Change-Id: Ic88e89c0173ab6605aea5d5e9dadf214f5f6cb62
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/appc/appc-master.yaml b/jjb/appc/appc-master.yaml
index b80c811..71e3700 100644
--- a/jjb/appc/appc-master.yaml
+++ b/jjb/appc/appc-master.yaml
@@ -8,7 +8,9 @@
       - '{project-name}-{stream}-merge-java':
           build-node: ubuntu1604-builder-8c-8g
       - gerrit-maven-stage:
-          build-node: ubuntu1604-builder-8c-8g
+          sign-artifacts: true
+          build-node: centos7-docker-8c-8g
+          maven-versions-plugin: true
       - '{project-name}-{stream}-release-version-java-daily':
           build-node: ubuntu1604-builder-8c-8g