Create config-download dir in tripleo-bootstrap role

Instead of creating the /var/lib/heat-config/tripleo-config-download
directory before every individual server deployment, we should just do
it one time. Move the task to the new tripleo-bootstrap role which is
run at the beginning before any deployments.

Change-Id: Id8706f61df717bbe614aade659ff13b857e7f9dd
Closes-Bug: #1737801

roles/tripleo-bootstrap/tasks/main.yml

@@ -4,3 +4,9 @@
   yum:
     name: "{{ packages_bootstrap }}"
   become: true
+
+- name: Create /var/lib/heat-config/tripleo-config-download directory for deployment data
+  file:
+    path: /var/lib/heat-config/tripleo-config-download
+    state: directory
+  become: true

tripleo_common/templates/deployments.yaml

@@ -1,9 +1,3 @@
-- name: Create /var/lib/heat-config/tripleo-config-download directory for deployment data
-  file:
-    path: /var/lib/heat-config/tripleo-config-download
-    state: directory
-  become: true
-
 - name: "Render deployment file for {{ item }}"
   template:
     src: ../templates/heat-config.j2