[1764751120] Upstream Reporter: Tadayoshi Sato
Upstream issue status: Open
Upstream description:

Now Keycloak support is almost implemented #2845, we should also have E2E tests for the integration. We should have a dedicated sub project `tests/keycloak` along with `springboot` and `quarkus`. We can utilise containerised Keycloak `quay.io/keycloak/keycloak` and possibly use Testcontainers as well for the testing. When we use a container, we can use this realm config https://github.com/hawtio/hawtio/blob/3.x/examples/keycloak-integration/hawtio-demo-realm.json.