test: fix k3s images detection method (cloudnative-pg#2053)

Also fix the order of arguments in setup-cluster.sh call to support
*BSD getopt.

Closes: cloudnative-pg#2020

Signed-off-by: Marco Nenciarini <marco.nenciarini@enterprisedb.com>

Author: mnencia

hack/e2e/run-e2e-k3d.sh

@@ -53,7 +53,7 @@ cleanup() {
 
 main() {
   # Call to setup-cluster.sh script
-  "${HACK_DIR}/setup-cluster.sh" create -r
+  "${HACK_DIR}/setup-cluster.sh" -r create
 
   trap cleanup EXIT
 

hack/e2e/run-e2e-kind.sh

@@ -53,7 +53,7 @@ cleanup() {
 
 main() {
   # Call to setup-cluster.sh script
-  "${HACK_DIR}/setup-cluster.sh" create -r
+  "${HACK_DIR}/setup-cluster.sh" -r create
 
   trap cleanup EXIT
 

hack/setup-cluster.sh

@@ -198,8 +198,7 @@ create_cluster_k3d() {
   local cluster_name=$2
 
   local latest_k3s_tag
-  latest_k3s_tag=$(curl -sL "https://registry.hub.docker.com/v1/repositories/rancher/k3s/tags" |
-    jq -r '.[].name' | grep -- "^${k8s_version//./\\.}"'\+-k3s[0-9]$' | tail -n 1)
+  latest_k3s_tag=$(k3d version list k3s | grep -- "^${k8s_version//./\\.}"'\+-k3s[0-9]$' | tail -n 1)
 
   local volumes=()
   if [ -n "${DOCKER_REGISTRY_MIRROR:-}" ] || [ -n "${ENABLE_REGISTRY:-}" ]; then