Add Keycloak 22

- Keep backwards compatibility with Keycloak 18 / RH-SSO
- Rewrite jakarta packages to javax packages before ci build for older Keycloak versions with maven-replacer-plugin
- Use older resteasy version (4.7.7.Final) for Keycloak < 22.0.0 in ci
- Add workaround to ResteasyUtil for missing isClose() method in older Resteasy JAX-RS Response type
- Required jakarta dependencies
- Make cookie handling in CookieClientFilter more robust
- add generated master realm for 22.0.0
- Add missing mockServerClient request responder
- Extend checkstyle config: Moved jakarta imports to SPECIAL import group that follows STANDARD_JAVA_PACKAGE import group
- Adjusted realm setting internationalizationEnabled in test config files with is now required for managing user locale via attributes
We need to configure internationalizationEnabled to be able to supply a locale attribute during user creation
The enforcement was introduced in Keycloak 22.0.0, see: keycloak/keycloak@d0691b0
but the realm property exists for many years already and is thus safe to set.

Fixes #897

.github/workflows/ci.yaml

@@ -27,6 +27,8 @@ jobs:
       fail-fast: false
       matrix:
         env:
+          # we keep 18.0.2 for backwards compatibility with RH-SSO 7.6
+          - KEYCLOAK_VERSION: 18.0.2
           - KEYCLOAK_VERSION: 19.0.3
           - KEYCLOAK_VERSION: 20.0.5
           - KEYCLOAK_VERSION: 21.1.1

CHANGELOG.md

@@ -14,9 +14,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Migrated imports of javax packages to jakarta packages
 - Upgraded Spring Boot to 2.7.13
 
-### Removed
-- Support for Keycloak 18
-
 ## [5.7.0] - 2023-07-14
 
 ### Changed

README.md

@@ -77,9 +77,10 @@ See: [docs/FEATURES.md](./docs/FEATURES.md)
 # Compatibility with keycloak
 
 Since keycloak-config-cli 4.0 will support the latest 4 releases of keycloak, if possible.
+There are some exceptions:
 
-There are some exceptions, for example if keycloak introduce some backward compatible changes, keycloak-config-cli will cut the support, too.
-
+- keycloak-config-cli will try the keep an extended support for [RH-SSO](https://access.redhat.com/articles/2342881)
+- keycloak-config-cli will cut the support if keycloak introduces some breaking changes
 
 # Build this project