[MGDSTRM-10764] Update Keycloak to version 21 for OpenShift 4.12

[MikeEdgar]

• Bump Keycloak to version 21, adjust installation and supporting test code
• Specify JUL log manager property for system tests - Quarkus 2.13.7 upgrade introduced very verbose OkHttp logging at INFO level, which is limited with this property
• Remove surefire configuration to allow unit tests to be skipped when running with the quickly profile

[kornys]

Have no chance to test it, but LGTM from code POV

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication

[MikeEdgar]

@biswassri @shawkins ok to merge this? The changes are entirely in the systemtest module.

[shawkins]

LGTM

[shawkins]

It's not a required change, but there is support in the client for operations like this.

TestUtils.waitFor(description + " ready", 1_000, 600_000, () -> isPodReady(labelName, labelValue));

and the isPodReady method can be replaced with

KubeClient.getInstance()
                .client()
                .pods()
                .inNamespace(OPERATOR_NS)
                .withLabel(labelName, labelValue)
                .waitUntilReady(600_000, TimeUnit.MILLISECONDS);

Most of the waitFor operations can be replaced in a similar manner as there is also waitUntilCondition.

[MikeEdgar]

Thanks, good suggestion. I opened #876 so we can remember to revisit this.