Add KeycloakTestResourceLifecycleManager

Description In many OIDC related tests we have to add QuarkusTestResourceLifecycleManager implementations which setup Keycloak - realm, client, users. @stuartwdouglas has proposed that we provide the one which can be reused in tests, which is a nice idea.

Implementation ideas Users who would like to test quarkus-oidc against Keycloak should be able to type something like this:

@QuarkusTest
@QuarkusTestResource(TestKeycloakRealmResourceManager.class)
public class CodeFlowTest {

    @Test
    public void testCodeFlow() throws IOException {
    }
}

where TestKeycloakRealmResourceManager.class would by default set up quarkus realm, quarkus-app client, users alice as admin and bob as user, something like that, and possibly be configurable

CC @stuartwdouglas @pedroigor

@cemnura let me know please if it can be of interest once the wiremock issues are complete 😃

[gsmet]

It should be called KeycloakTestResourceLifecycleManager btw.

[cemnura]

I figured out that the current integration-tests/oidc runs a test container via maven plugin.

I migrated the QuarkusTestResourceLifecycleManager to a separate test-framework module and enabled the test container to run programmatically rather then a maven plugin.

All previous test seems to be working.

Also, I did not change the maven profile configurations so that it wont be a problem during CI pipeline.

To run the test

./mvnw -Dquickly
./mvnw package -f integration-tests/oidc -Ptest-keycloak