feat: configure the UATs to run behind a proxy using Notebooks (#98)

* add poddefault and configure kfp tests

* kfp: use dict.get to avoid KeyError

* configure katib uats

* configure training uats

* add testing with proxy instructions to README

README.md

@@ -139,6 +139,55 @@ tox -e kubeflow-remote
 tox -e kubeflow-local
 ```
 
+### Run behind proxy
+#### Prerequistes
+**To run the tests behind proxy using Notebook or using the driver, the following step is necessary:**
+
+Edit the PodDefault `tests/proxy-poddefault.yaml` to replace the placeholders for:
+ * `<proxy_address>:<proxy_port>`: The address and port of your proxy server
+ * `<cluster cidr>`: you can get this value by running:
+ ```
+ cat /var/snap/microk8s/current/args/kube-proxy | grep cluster-cidr
+ ```
+ * `<service cluster ip range>`: you can get this value by running:
+ ```
+ cat /var/snap/microk8s/current/args/kube-apiserver | grep service-cluster-ip-range
+ ```
+
+ * `<nodes internal ip(s)>`: the Internal IP of the nodes where your cluster is running, you can
+ get this value by running:
+ ```
+ microk8s kubectl get nodes -o wide
+ ```
+ It is the `INTERNAL-IP` value
+ * `<hostname>`: the name of your host on which the cluster is deployed, you can use the
+ `hostname` command to get it
+
+#### Running using Notebook
+To run the tests behind proxy using Notebook:
+1. Login to the Dashboard and Create a Profile
+2. Apply the PodDefault to your Profile's namespace, make sure you already followed the Prerequisites
+ section to modify the PodDefault. Apply it with:
+ ```
+ kubectl apply -f ./tests/proxy-poddefault.yaml -n <your_namespace>
+ ```
+3. Create a Notebook and from the `Advanced Options > Configurations` select `Add proxy settings`,
+ then click `Launch` to start the Notebook.
+ Wait for the Notebook to be Ready, then Connect to it.
+4. From inside the Notebook, start a new terminal session and clone this repo:
+
+ ```bash
+ git clone https://github.com/canonical/charmed-kubeflow-uats.git
+ ```
+ Open the `charmed-kubeflow-uats/tests` directory and for each `.ipynb` test file there, open it
+ and run the Notebook.
+ 
+ Currently, the following tests are supported to run behind proxy:
+ * katib
+ * kserve
+ * kfp_v2
+ * training (except TFJob due to https://github.com/canonical/training-operator/issues/182)
+
 #### Developer Notes
 
 Any environment that can be used to access and configure the Charmed Kubeflow deployment is