Remove deprecated Ambassador ingress code (#8086)

README.md

docs/_sidebar.md

docs/ansible.md

docs/ingress_controller/ambassador.md

inventory/sample/group_vars/k8s_cluster/addons.yml

roles/download/defaults/main.yml

...etes-apps/ingress_controller/ambassador/defaults/main.yml

...ernetes-apps/ingress_controller/ambassador/tasks/main.yml

...gress_controller/ambassador/templates/00-namespace.yml.j2

...roller/ambassador/templates/clusterrole-ambassador.yml.j2

...ambassador/templates/clusterrolebinding-ambassador.yml.j2

...er/ambassador/templates/cr-ambassador-installation.yml.j2

...r/ambassador/templates/crd-ambassador-installation.yml.j2

..._controller/ambassador/templates/deploy-ambassador.yml.j2

...ss_controller/ambassador/templates/role-ambassador.yml.j2

...roller/ambassador/templates/rolebinding-ambassador.yml.j2

...ress_controller/ambassador/templates/sa-ambassador.yml.j2

roles/kubernetes-apps/ingress_controller/meta/main.yml

roles/kubespray-defaults/defaults/main.yaml

tests/files/packet_opensuse-canal.yml