cert-manager: Upgrade to 0.3.2

Upstream Changes:

-   cert-manager 0.3.2 (https://github.com/jetstack/cert-manager/releases/tag/v0.3.2)

Our Changes:

-   Remove legacy addon dir, manifests and namespace before upgrade

roles/kubernetes-apps/ingress_controller/cert_manager/templates/sa-cert-manager.yml.j2

@@ -0,0 +1,11 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: cert-manager
+  namespace: {{ cert_manager_namespace }}
+  labels:
+    app: cert-manager
+    chart: cert-manager-v0.3.4
+    release: cert-manager
+    heritage: Tiller