gha: centralize kind version and image definition in set-env-variables

Let's define kind-related variables (i.e., version, k8s image and k8s
version) inside the set-env-variables action. One all consumers will
have been migrated through the subsequent commit, this will ensure
consistency across workflows, simplify version bumps as well as the
introduction of new workflows depending on them. One extra byproduct
is that renovate updates will also stop requesting reviews from all
the different teams owning each specific workflow.

Signed-off-by: Marco Iorio <[email protected]>

Author: giorio94

.github/actions/set-env-variables/action.yml

@@ -16,3 +16,13 @@ runs:
         echo "CILIUM_CLI_VERSION=$CILIUM_CLI_VERSION" >> $GITHUB_ENV
         echo "PUSH_TO_DOCKER_HUB=true" >> $GITHUB_ENV
         echo "GCP_PERF_RESULTS_BUCKET=gs://cilium-scale-results" >> $GITHUB_ENV
+
+        # renovate: datasource=github-releases depName=kubernetes-sigs/kind
+        KIND_VERSION="v0.22.0"
+        # renovate: datasource=docker
+        KIND_K8S_IMAGE="kindest/node:v1.29.2@sha256:51a1434a5397193442f0be2a297b488b6c919ce8a3931be0ce822606ea5ca245"
+        KIND_K8S_VERSION=$(echo "$KIND_K8S_IMAGE" | sed -r 's|.+:(v[0-9a-z.-]+)(@.+)?|\1|')
+
+        echo "KIND_VERSION=$KIND_VERSION" >> $GITHUB_ENV
+        echo "KIND_K8S_IMAGE=$KIND_K8S_IMAGE" >> $GITHUB_ENV
+        echo "KIND_K8S_VERSION=$KIND_K8S_VERSION" >> $GITHUB_ENV