Resolves: [JWS-3345] - Openshift image of JWS 6 with OpenJDK21 release

* Add jdk21 overrides file and maven setup for relevant container

Signed-off-by: Sokratis Zappis <[email protected]>

Author: bekionel

tomcat10/custom-modules/maven/21/configure.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+# This file is shipped by a Maven package and sets JAVA_HOME to
+# an OpenJDK-specific path. This causes problems for OpenJ9 containers
+# as the path is not correct for them.  We don't need this in any of
+# the containers because we set JAVA_HOME in the container metadata.
+# Blank the file rather than removing it, to avoid a warning message
+# from /usr/bin/mvn.
+if [ -f /etc/java/maven.conf ]; then
+  :> /etc/java/maven.conf
+fi

tomcat10/custom-modules/maven/21/module.yaml

@@ -0,0 +1,25 @@
+schema_version: 1
+name: jboss.container.maven
+version: '3.8.21'
+description: Provides Maven v3.8 capabilities to an image.
+
+labels:
+- name: io.fabric8.s2i.version.maven
+  value: "3.8"
+
+envs:
+- name: JBOSS_CONTAINER_MAVEN_38_MODULE
+  value: /opt/jboss/container/maven/38/
+- name: MAVEN_VERSION
+  value: '3.8'
+
+modules:
+  install:
+  - name: jboss.container.maven.module
+
+packages:
+  install:
+  - maven-openjdk21
+
+execute:
+- script: configure.sh

tomcat10/jdk21-overrides.yaml

@@ -0,0 +1,34 @@
+schema_version: 1
+
+name: "jboss-webserver-6/jws60-openjdk21-rhel8-openshift"
+description: "Red Hat JBoss Web Server 6.0 - Tomcat 10 OpenShift container image with OpenJDK21 on UBI8"
+version: "6.0.3"
+from: "jboss-webserver-6/webserver60-openjdk21-tomcat10-rhel8:6.0.3"
+labels:
+    - name: "com.redhat.component"
+      value: "jboss-webserver-60-openjdk21-rhel8-openshift-container"
+    - name: "io.k8s.description"
+      value: "Platform for building and running web applications on JBoss Web Server 6.0 with OpenJDK21 - Tomcat v10"
+modules:
+      repositories:
+          - name: cct_module
+            git:
+                  url: https://github.com/jboss-openshift/cct_module.git
+                  ref: 0.45.6
+          - name: jboss-eap-modules
+            git:
+                  url: https://github.com/jboss-container-images/jboss-eap-modules.git
+                  ref: master
+          - name: jboss-jws-modules
+            git:
+                  url: https://github.com/web-servers/jboss-jws-container-images-modules
+                  ref: main
+          - path: custom-modules
+      install:
+          - name: jboss.container.maven
+            version: "3.8.21"
+
+osbs:
+      repository:
+            name: containers/jboss-webserver-openjdk21-tomcat10
+            branch: jws-6.0-openshift-dev-rhel-8