Update README

Author: stevebux

tests/e2e-tests/README.md

@@ -1,24 +1,5 @@
 # E2E Tests
 
-## Generate An Apigee Access Token
-
-To generate authentication using Apigee, you must have access to an Apigee account and use `get_token` via the command line and generate an Apigee access token.
-
-**Tokens expire once per day and require refreshing.**
-
-* Install [`get_token`](https://docs.apigee.com/api-platform/system-administration/auth-tools#install)
-* Run the following command and log in with your Apigee credentials when prompted:
-
-```shell
-export APIGEE_ACCESS_TOKEN=$(SSO_LOGIN_URL=https://login.apigee.com get_token)
-```
-
-* If your token does not refresh, try clearing the cache:
-
-```shell
-export APIGEE_ACCESS_TOKEN=$(SSO_LOGIN_URL=https://login.apigee.com get_token --clear-sso-cache)
-```
-
 ### Set Proxy Name
 
 Set the `PROXY_NAME` environment variable to specify the environment for test execution. You can find the proxy name by logging into [Apigee](https://apigee.com/edge), navigating to 'API Proxies' and searching for 'supplier-api' for lower environments like internal-dev.
@@ -31,3 +12,14 @@ Available values for `PROXY_NAME` include:
 
 * `nhs-notify-supplier--internal-dev--nhs-notify-supplier`
 * `nhs-notify-supplier--internal-dev--nhs-notify-supplier-pr<num>`
+
+### Set Up API Keys
+
+Set the following environment variables to use the Apigee API keys:
+
+```shell
+export NON_PROD_API_KEY=******
+export STATUS_ENDPOINT_API_KEY=******
+```
+
+The values have been redacted here but you can obtain them from another team member.