support e2e for WSL

Signed-off-by: nasusoba <[email protected]>

Author: nasusoba

test/framework/cluster_proxy.go

@@ -287,9 +287,9 @@ func (p *clusterProxy) GetWorkloadCluster(ctx context.Context, namespace, name s
 	// gets the kubeconfig from the cluster
 	config := p.getKubeconfig(ctx, namespace, name)
 
-	// if we are on mac and the cluster is a DockerCluster, it is required to fix the control plane address
+	// if we are on mac or Windows Subsystem for Linux (WSL), and the cluster is a DockerCluster, it is required to fix the control plane address
 	// by using localhost:load-balancer-host-port instead of the address used in the docker network.
-	if goruntime.GOOS == "darwin" && p.isDockerCluster(ctx, namespace, name) {
+	if (goruntime.GOOS == "darwin" || os.Getenv("WSL_DISTRO_NAME") != "") && p.isDockerCluster(ctx, namespace, name) {
 		p.fixConfig(ctx, name, config)
 	}
 

test/framework/kubetest/run.go

@@ -243,9 +243,9 @@ func dockeriseKubeconfig(kubetestConfigDir string, kubeConfigPath string) (strin
 	}
 	newPath := path.Join(kubetestConfigDir, "kubeconfig")
 
-	// On CAPD, if not running on Linux, we need to use Docker's proxy to connect back to the host
+	// On CAPD, if not running on Linux or the environment is Windows Subsystem for Linux (WSL), we need to use Docker's proxy to connect back to the host
 	// to the CAPD cluster. Moby on Linux doesn't use the host.docker.internal DNS name.
-	if runtime.GOOS != "linux" {
+	if runtime.GOOS != "linux" || os.Getenv("WSL_DISTRO_NAME") != "" {
 		for i := range kubeConfig.Clusters {
 			kubeConfig.Clusters[i].Server = strings.ReplaceAll(kubeConfig.Clusters[i].Server, "127.0.0.1", "host.docker.internal")
 		}