Use template in ansible-role-zuul

Because we've switched to template in ansible-role-zuul, we can just
use it.

Change-Id: Iac1cc7410ca19f23dd0b4ade097fa50df426938c
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

playbooks/bastion.yaml

@@ -31,14 +31,3 @@
         name: "{{ hostvars[item].ansible_host }}"
         key: "{{ lookup('pipe', 'ssh-keyscan -t rsa {{ hostvars[item].ansible_host }}') }}"
       with_inventory_hostnames: all:!bastion
-
-  tasks:
-    - name: Create tmp directory.
-      file:
-        path: /tmp/windmill/zuul/etc/zuul
-        state: directory
-
-    - name: Template
-      template:
-        dest: /tmp/windmill/zuul/etc/zuul/zuul.conf
-        src: zuul/etc/zuul/zuul.conf.j2

playbooks/vars/zuul.yaml

@@ -16,7 +16,7 @@
 # current don't because this deployment is used as an example.
 
 # windmill.zuul
-zuul_file_zuul_conf_src: /tmp/windmill/zuul/etc/zuul/zuul.conf
+zuul_file_zuul_conf_src: zuul/etc/zuul/zuul.conf.j2
 
 # windmill.ssh
 ssh_key_private_content: |