BUG: Bump back from 2404 to 2204

Compatibility with 2404 is flakey, on reboot the machine no longer
accepts password based auth which causes the K8s-image-builder and
packer to hang.

This is racey so sometimes it will pass with 2404, so use 2204 which is
reliable

cluster-api/README.md

@@ -58,7 +58,7 @@ export ANSIBLE_ROLES_PATH="$(pwd)/os_builders/roles:$(pwd)/cluster-api/roles"
 export PACKER_VAR_FILES="$(pwd)/cluster-api/ansible_stfc_roles.json"
 
 # Run build
-make -C k8s-image-builder/images/capi build-qemu-ubuntu-2404
+make -C k8s-image-builder/images/capi build-qemu-ubuntu-2204
 ```
 
 Building a custom version
@@ -75,7 +75,7 @@ export ROLE_DEFINITION="cluster-api/ansible_stfc_roles.json"
 
 export PACKER_VAR_FILES="$(pwd)/${K8S_VERSION} $(pwd)/${ROLE_DEFINITION}"
 
-make -C k8s-image-builder/images/capi build-qemu-ubuntu-2404
+make -C k8s-image-builder/images/capi build-qemu-ubuntu-2204
 ```
 
 Adding a new version

scripts/build-all.sh

@@ -17,5 +17,5 @@ VERSIONS=( "${REPO_ROOT}"/cluster-api/versions/*.json )
 for version_path in "${VERSIONS[@]}"; do
     echo "Building image for version: ${version_path}..." && \
     export PACKER_VAR_FILES="${CUSTOM_ROLE_PATH} ${version_path}" && \
-    make -C "${REPO_ROOT}/k8s-image-builder/images/capi" build-qemu-ubuntu-2404 &
+    make -C "${REPO_ROOT}/k8s-image-builder/images/capi" build-qemu-ubuntu-2204 &
 done