Expand e2e readme

Author: carreter

e2e/README.md

@@ -10,7 +10,7 @@ These can be run automatically using `make e2e-test`.
 Before any of the actual tests are run, the `TestMain()` function
 in `main_test.go` performs the following set up steps:
 
-- Spin up a new kind cluster with the node image provided by the `-kind-image` flag.
+- Spin up a new kind cluster (4 control plane and 4 worker nodes) with the node image provided by the `-kind-image` flag.
 - Sideload the KNP agent and server images provided with `-agent-image` and `-server-image` into the cluster.
 - Deploy the necessary RBAC and service templates for both the KNP agent and server (see `renderAndApplyManifests`).
 
@@ -21,3 +21,9 @@ in `main_test.go` performs the following set up steps:
 These tests deploy the KNP servers and agents to the previously created kind cluster.
 After the deployments are up, the tests check that both the agent and server report
 the correct number of connections on their metrics endpoints.
+
+### `lease_count_test.go`
+
+Similar to `static_count_test.go`, except using the new lease-based server counting
+system rather than passing the server count to the KNP server deployment as a CLI
+flag.