Merge branch 'docs/clusters-knative' into 'master'

Update the cluster docs for Knative

See merge request gitlab-org/gitlab-ce!23113

doc/user/project/clusters/index.md

@@ -228,7 +228,7 @@ twice, which can lead to confusion during deployments.
 | [Prometheus](https://prometheus.io/docs/introduction/overview/) | 10.4+ | Prometheus is an open-source monitoring and alerting system useful to supervise your deployed applications. | [stable/prometheus](https://github.com/helm/charts/tree/master/stable/prometheus) |
 | [GitLab Runner](https://docs.gitlab.com/runner/) | 10.6+ | GitLab Runner is the open source project that is used to run your jobs and send the results back to GitLab. It is used in conjunction with [GitLab CI/CD](https://about.gitlab.com/features/gitlab-ci-cd/), the open-source continuous integration service included with GitLab that coordinates the jobs. When installing the GitLab Runner via the applications, it will run in **privileged mode** by default. Make sure you read the [security implications](#security-implications) before doing so. | [runner/gitlab-runner](https://gitlab.com/charts/gitlab-runner) |
 | [JupyterHub](http://jupyter.org/) | 11.0+ | [JupyterHub](https://jupyterhub.readthedocs.io/en/stable/) is a multi-user service for managing notebooks across a team. [Jupyter Notebooks](https://jupyter-notebook.readthedocs.io/en/latest/) provide a web-based interactive programming environment used for data analysis, visualization, and machine learning. We use [this](https://gitlab.com/gitlab-org/jupyterhub-user-image/blob/master/Dockerfile) custom Jupyter image that installs additional useful packages on top of the base Jupyter. You will also see ready-to-use DevOps Runbooks built with Nurtch's [Rubix library](https://github.com/amit1rrr/rubix). More information on creating executable runbooks can be found at [Nurtch Documentation](http://docs.nurtch.com/en/latest).  **Note**: Authentication will be enabled for any user of the GitLab server via OAuth2. HTTPS will be supported in a future release. | [jupyter/jupyterhub](https://jupyterhub.github.io/helm-chart/) |
-| [Knative](https://cloud.google.com/knative) | 0.1.2 | Knative provides a platform to create, deploy, and manage serverless workloads from a Kubernetes cluster. It is used in conjunction with, and includes [Istio](https://istio.io) to provide an external IP address for all programs hosted by Knative. You will be prompted to enter a wildcard domain where your applications will be exposed. Configure your DNS server to use the external IP address for that domain. For any application created and installed, they will be accessible as `<program_name>.<kubernetes_namespace>.<domain_name>`.  **Note**: This will require your kubernetes cluster to have RBAC enabled. | [knative/knative](https://storage.googleapis.com/triggermesh-charts)
+| [Knative](https://cloud.google.com/knative) | 11.5+ | Knative provides a platform to create, deploy, and manage serverless workloads from a Kubernetes cluster. It is used in conjunction with, and includes [Istio](https://istio.io) to provide an external IP address for all programs hosted by Knative. You will be prompted to enter a wildcard domain where your applications will be exposed. Configure your DNS server to use the external IP address for that domain. For any application created and installed, they will be accessible as `<program_name>.<kubernetes_namespace>.<domain_name>`. This will require your kubernetes cluster to have [RBAC enabled](#role-based-access-control-rbac). | [knative/knative](https://storage.googleapis.com/triggermesh-charts)
 
 NOTE: **Note:**
 As of GitLab 11.6 Helm Tiller will be upgraded to the latest version supported
@@ -267,6 +267,9 @@ the `gcloud` command in a local terminal or using the **Cloud Shell**.
 
 If the cluster is not on GKE, follow the specific instructions for your
 Kubernetes provider to configure `kubectl` with the right credentials.
+The output of the following examples will show the external IP address of your
+cluster. This information can then be used to set up DNS entries and forwarding
+rules that allow external access to your deployed applications.
 
 If you installed the Ingress [via the **Applications**](#installing-applications),
 run the following command:
@@ -275,28 +278,23 @@ run the following command:
 kubectl get svc --namespace=gitlab-managed-apps ingress-nginx-ingress-controller -o jsonpath='{.status.loadBalancer.ingress[0].ip} '
 ```
 
-NOTE: **Note:**
-For Istio/Knative, use the following command:
+For Istio/Knative, the command will be different:
 
 ```bash
 kubectl get svc --namespace=istio-system knative-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip} '
 ```
 
-Otherwise, you can list the IP addresses of all load balancers:
+Some Kubernetes clusters return a hostname instead, like [Amazon EKS](https://aws.amazon.com/eks/). For these platforms, run:
 
 ```bash
-kubectl get svc --all-namespaces -o jsonpath='{range.items[?(@.status.loadBalancer.ingress)]}{.status.loadBalancer.ingress[*].ip} '
+kubectl get service ingress-nginx-ingress-controller -n gitlab-managed-apps -o jsonpath="{.status.loadBalancer.ingress[0].hostname}".
 ```
 
-> **Note**: Some Kubernetes clusters return a hostname instead, like [Amazon EKS](https://aws.amazon.com/eks/). For these platforms, run:
-
-> ```bash
-> kubectl get service ingress-nginx-ingress-controller -n gitlab-managed-apps -o jsonpath="{.status.loadBalancer.ingress[0].hostname}".
-> ```
+Otherwise, you can list the IP addresses of all load balancers:
 
-The output is the external IP address of your cluster. This information can then
-be used to set up DNS entries and forwarding rules that allow external access to
-your deployed applications.
+```bash
+kubectl get svc --all-namespaces -o jsonpath='{range.items[?(@.status.loadBalancer.ingress)]}{.status.loadBalancer.ingress[*].ip} '
+```
 
 ### Using a static IP