Switch Puppet tarball job to use Zuul role

We created a role which can build a Puppet module so let's leverage
that instead of duplicating the code.

Depends-On: I45761c2d111640733ddec8b4c08066655b6944e2
Change-Id: Ib4d1bf79b0468a44b08c738b7db3fa65b6e47767

playbooks/puppet-tarball/run.yaml

@@ -1,6 +1,3 @@
 - hosts: all
-  tasks:
-    - name: Build puppet module
-      command: puppet module build .
-      args:
-        chdir: "{{ zuul.project.src_dir }}"
+  roles:
+    - build-puppet-module