ingress-nginx: Upgrade to 0.18.0

Upstream Changes:

-   ingress-nginx 0.18.0 (https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.18.0)

README.md

@@ -104,7 +104,7 @@ Supported Components
 -   Application
     -   [cephfs-provisioner](https://github.com/kubernetes-incubator/external-storage) v1.1.0-k8s1.10
     -   [cert-manager](https://github.com/jetstack/cert-manager) v0.4.0
-    -   [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v0.17.1
+    -   [ingress-nginx](https://github.com/kubernetes/ingress-nginx) v0.18.0
 
 Note: kubernetes doesn't support newer docker versions. Among other things kubelet currently breaks on docker's non-standard version numbering (it no longer uses semantic versioning). To ensure auto-updates don't break your cluster look into e.g. yum versionlock plugin or apt pin).
 

roles/download/defaults/main.yml

@@ -138,7 +138,7 @@ local_volume_provisioner_image_tag: "v2.1.0"
 cephfs_provisioner_image_repo: "quay.io/external_storage/cephfs-provisioner"
 cephfs_provisioner_image_tag: "v1.1.0-k8s1.10"
 ingress_nginx_controller_image_repo: "quay.io/kubernetes-ingress-controller/nginx-ingress-controller"
-ingress_nginx_controller_image_tag: "0.17.1"
+ingress_nginx_controller_image_tag: "0.18.0"
 ingress_nginx_default_backend_image_repo: "gcr.io/google_containers/defaultbackend"
 ingress_nginx_default_backend_image_tag: "1.4"
 cert_manager_version: "v0.4.0"