Support for Ambassador OSS as an Ingress (#6135)

Support for Ambassador OSS as an Ingress Controller when
settings `ingress_ambassador_enabled: true`.

Signed-off-by: Alvaro Saurin <alvaro.saurin@gmail.com>

roles/kubernetes-apps/ingress_controller/ambassador/templates/clusterrole-ambassador.yml.j2

@@ -0,0 +1,14 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: ambassador-operator-cluster
+  labels:
+    app.kubernetes.io/name: ambassador-operator
+    app.kubernetes.io/part-of: ambassador-operator
+rules:
+  - apiGroups: ['*']
+    resources: ['*']
+    verbs: ['*']
+  - nonResourceURLs: ['*']
+    verbs: ['*']