deploy plugin file to tarballs.o.o/ci/gearman-plugin

This commit will copy the built gearman-plugin.hpi file to
tarballs.o.o with an appended version identifier (i.e.
tarballs.o.o/ci/gearman-plugin/gearman-plugin-${version}.hpi)

Change-Id: Ib0fa29691db27a40507524488588c57760b70776
Reviewed-on: https://review.openstack.org/37139
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins

modules/openstack_project/files/jenkins_job_builder/config/jenkins-plugin-jobs.yaml

@@ -50,11 +50,15 @@
       root-pom: pom.xml
       goals: 'clean package -Dmaven.test.skip=true -Dproject-version=${{PROJECT_VER}}'
 
+    postbuilders:
+      - shell: |
+            cp ./target/{name}.hpi ./target/{name}-$PROJECT_VER.hpi
+
     publishers:
       - war:
           site: 'tarballs.openstack.org'
-          warfile: 'target/{name}.hpi'
-          target: 'tarballs/ci/{name}/{name}-${{PROJECT_VER}}.hpi'
+          warfile: 'target/{name}-${{PROJECT_VER}}.hpi'
+          target: 'tarballs/ci/{name}'
       - console-log-post
 
 - job-template: