Introduce tripleo-bootstrap Ansible role

This role will be used to prepare an environment that will deploy
TripleO.
For now, it'll just deploy 2 packages by default.

Change-Id: I560273be2ebe3a49ff37e3682222706939e5d879

releasenotes/notes/tripleo-bootstrap-721b73d21ade7d6d.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Introduce a new Ansible role, called tripleo-bootstrap which will take
+    care of prepare an environment so we can deploy TripleO.

roles/tripleo-bootstrap/README.md

@@ -0,0 +1,39 @@
+tripleo-bootstrap
+=================
+
+An Ansible role to bootstrap a TripleO deployment.
+
+Requirements
+------------
+
+This section needs to be documented.
+
+Role variables
+--------------
+
+- packages_bootstrap: -- list of required packages to bootstrap TripleO.
+
+Dependencies
+------------
+
+This role needs repositories to be deployed as it works now.
+
+Example Playbook
+----------------
+
+Sample playbook to call the role:
+
+  - name: Bootstrap TripleO
+    hosts: all
+    roles:
+      - tripleo-bootstrap
+
+License
+-------
+
+Free software: Apache License (2.0)
+
+Author Information
+------------------
+
+OpenStack TripleO team

roles/tripleo-bootstrap/defaults/main.yml

@@ -0,0 +1,9 @@
+---
+
+# List of packages that are requred to bootstrap TripleO.
+# The list is used by `yum` Ansible module, so it takes
+# a comma separated list of packages or (as of 2.0) a list
+# of packages.
+packages_bootstrap:
+  - openstack-heat-agents
+  - jq

roles/tripleo-bootstrap/handlers/main.yml

@@ -0,0 +1 @@
+---

roles/tripleo-bootstrap/meta/main.yml

@@ -0,0 +1 @@
+---

roles/tripleo-bootstrap/tasks/main.yml

@@ -0,0 +1,6 @@
+---
+
+- name: Deploy required packages to bootstrap TripleO
+  yum:
+    name: "{{ packages_bootstrap }}"
+  become: true

setup.cfg

@@ -42,6 +42,7 @@ data_files =
     share/tripleo-common/image-yaml = image-yaml/*
     share/tripleo-common/workbooks = workbooks/*
     share/tripleo-common/healthcheck = healthcheck/*
+    /usr/share/ansible/roles/ = roles/*
 
 [build_sphinx]
 source-dir = doc/source