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-parent.yaml b/jjb/appc/appc-parent.yaml
index 032b8fd..7899b29 100644
--- a/jjb/appc/appc-parent.yaml
+++ b/jjb/appc/appc-parent.yaml
@@ -11,7 +11,10 @@
     jobs:
       - '{project-name}-{stream}-verify-java'
       - '{project-name}-{stream}-merge-java'
-      - gerrit-maven-stage
+      - gerrit-maven-stage:
+          sign-artifacts: true
+          build-node: centos7-docker-8c-8g
+          maven-versions-plugin: true
       - '{project-name}-{stream}-release-version-java-daily'
 
     project: 'appc/parent'