dcaegen2 jobs updates for jjb migration

1) Removed dublin branches across all jobs
2) Switched to centos7-docker-8c-8g for docker dependent builds
3) Removed dcaegen2-service clm (subproject has own clm job)
4) Cleaned up old release job (replaced by gerrit-maven jobs)

Change-Id: If77bdf431e0189d774d80b285ec1b0ca98c09d6b
Signed-off-by: Vijay Venkatesh Kumar <vv770d@att.com>
Issue-ID: DCAEGEN2-1669
Issue-ID: DCAEGEN2-1578
Signed-off-by: Vijay Venkatesh Kumar <vv770d@att.com>
diff --git a/jjb/dcaegen2/dcaegen2-platform-servicechange-handler.yaml b/jjb/dcaegen2/dcaegen2-platform-servicechange-handler.yaml
index a810fea..5c76222 100644
--- a/jjb/dcaegen2/dcaegen2-platform-servicechange-handler.yaml
+++ b/jjb/dcaegen2/dcaegen2-platform-servicechange-handler.yaml
@@ -5,18 +5,12 @@
     jobs:
       - '{project-name}-{stream}-verify-java'
       - '{project-name}-{stream}-merge-java'
-      - '{project-name}-{stream}-release-version-java-daily'
-      - '{project-name}-{stream}-docker-java-shell-daily':
-          mvn-goals: 'clean package docker:build -DpushImage'
-          # No-op
-          script: '/bin/true'
-          build-node: 'ubuntu1604-docker-8c-8g'
       - gerrit-maven-stage:
           sign-artifacts: true
-          build-node: centos7-builder-4c-4g
+          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 -DpushImage'