fix: add readme to tests

Signed-off-by: Mateusz Urbanek <[email protected]>

Author: shanduur-akamai

Diff for: test/e2e/README.md

@@ -0,0 +1,56 @@
+# End-to-end tests
+
+## Kyverno Chainsaw
+
+Chainsaw provides a declarative approach to test Kubernetes operators and controllers.
+
+While Chainsaw is designed for testing operators and controllers, it can declaratively test any Kubernetes objects.
+
+Chainsaw is an open-source tool that was initially developed for defining and running Kyverno end-to-end tests.
+
+## Configuration
+
+To configure Chainsaw for testing, you need to define parameters for the specific Kubernetes resources and controllers being tested. Below are example configurations.
+
+**Sample Configuration**
+
+```yaml
+driverName: sample-driver.objectstorage.k8s.io
+deletionPolicy: "Delete" # Options: "Delete" or "Retain"
+bucketClassParams:
+  foo: bar
+  baz: cux
+bucketAccessClassParams:
+  foo: bar
+  baz: cux
+authenticationType: "Key" # Options: "Key" or "IAM"
+bucketClaimProtocols: ["S3", "Azure"]  # Supported protocols for bucket claims
+bucketAccessProtocol: "S3"  # Protocol for bucket access
+```
+
+**Example for Linode COSI Driver**
+
+```yaml
+driverName: objectstorage.cosi.linode.com
+deletionPolicy: "Delete" # Options: "Delete" or "Retain"
+bucketClassParams:
+  cosi.linode.com/v1/region: us-east  # Specify the region for Linode object storage
+  cosi.linode.com/v1/acl: private  # Define the access control list (ACL) settings
+  cosi.linode.com/v1/cors: disabled  # Enable or disable Cross-Origin Resource Sharing (CORS)
+bucketAccessClassParams:
+  cosi.linode.com/v1/permissions: read_write  # Define access permissions
+authenticationType: "Key" # Options: "Key" or "IAM"
+bucketClaimProtocols: ["S3"]  # Supported protocol for bucket claims
+bucketAccessProtocol: "S3"  # Protocol for bucket access
+```
+
+### Running tests
+
+To run the Chainsaw end-to-end tests, you can use the following command:
+
+```sh
+chainsaw test --values /path/to/values.yaml
+```
+
+This command will run the tests using the values defined in the provided YAML configuration file.
+Ensure the file is properly configured to suit the Kubernetes objects and controllers you are testing.