chore: extract the previous stable version for upgrade

Signed-off-by: Hector Fernandez <[email protected]>

scripts/pre-commit.sh

@@ -39,7 +39,6 @@ E2E_TEST_CMD="${TEMP_DIR}/e2e-${PLATFORM} ${COMMON_TEST_ARGS}"
 IN_MEMORY_E2E_TEST_CMD="go test -v -timeout 900s -race ./test/e2e -args ${COMMON_TEST_ARGS} -in-memory-controllers=true -limited-scope-in-memory-controllers=false"
 
 KUBEFED_UPGRADE_TEST_NS="upgrade-test"
-KUBEFED_UPGRADE_TEST_VERSION="v0.5.0"
 
 function build-binaries() {
   ${MAKE_CMD} hyperfed
@@ -73,12 +72,16 @@ function run-e2e-upgrade-test() {
 
   echo "Adding a repo to install an older kubefed version"
   helm repo add kubefed-charts https://raw.githubusercontent.com/kubernetes-sigs/kubefed/master/charts
+  helm repo  update
 
-  echo "Installing an older kubefed version ${KUBEFED_UPGRADE_TEST_VERSION}"
-  helm install kubefed kubefed-charts/kubefed --namespace ${KUBEFED_UPGRADE_TEST_NS} --version=${KUBEFED_UPGRADE_TEST_VERSION} --create-namespace
+  # Get the previous version prior to our latest stable version
+  KUBEFED_UPGRADE_TEST_VERSION=$(helm search repo kubefed-charts/kubefed  --versions | awk '{print $2}' | head -3 | tail -1)
 
-  deployment-image-as-expected "${KUBEFED_UPGRADE_TEST_NS}" kubefed-admission-webhook admission-webhook "quay.io/kubernetes-multicluster/kubefed:${KUBEFED_UPGRADE_TEST_VERSION}"
-  deployment-image-as-expected "${KUBEFED_UPGRADE_TEST_NS}" kubefed-controller-manager controller-manager "quay.io/kubernetes-multicluster/kubefed:${KUBEFED_UPGRADE_TEST_VERSION}"
+  echo "Installing an older kubefed version v${KUBEFED_UPGRADE_TEST_VERSION}"
+  helm install kubefed kubefed-charts/kubefed --namespace ${KUBEFED_UPGRADE_TEST_NS} --version=v${KUBEFED_UPGRADE_TEST_VERSION} --create-namespace
+
+  deployment-image-as-expected "${KUBEFED_UPGRADE_TEST_NS}" kubefed-admission-webhook admission-webhook "quay.io/kubernetes-multicluster/kubefed:v${KUBEFED_UPGRADE_TEST_VERSION}"
+  deployment-image-as-expected "${KUBEFED_UPGRADE_TEST_NS}" kubefed-controller-manager controller-manager "quay.io/kubernetes-multicluster/kubefed:v${KUBEFED_UPGRADE_TEST_VERSION}"
 
   echo "Upgrading kubefed to current version"
   KUBEFED_NAMESPACE=$KUBEFED_UPGRADE_TEST_NS KIND_CLUSTER_NAME=${HOST_CLUSTER} KIND_LOAD_IMAGE=y ./scripts/deploy-kubefed.sh local/kubefed:e2e "${join_cluster_list[@]-}"