add support for running ansible on the head node to provision the compute node

Change-Id: I4adda3e903423e68893d2354d6c9c36469ebb517
diff --git a/roles/ansible/tasks/main.yml b/roles/ansible/tasks/main.yml
new file mode 100644
index 0000000..f97ecf8
--- /dev/null
+++ b/roles/ansible/tasks/main.yml
@@ -0,0 +1,10 @@
+- name: Ansible Repository
+  become: yes
+  apt_repository:
+    repo="ppa:ansible/ansible"
+
+- name: Ensure Ansible
+  become: yes
+  apt:
+    name=ansible
+    state=latest