test: Switch from Cilium test logger to Ginkgo

When executing ginkgo according to the instructions[0], the only error
output was:

  FAIL: Cannot connect to vmName 'k8s1-1.18'

After this change, the logs show the underlying error:

  cat: ssh-config: No such file or directory

[0] https://docs.cilium.io/en/v1.8/contributing/testing/e2e/#running-end-to-end-tests-in-other-environments-via-ssh

Signed-off-by: Manuel Buil <mbuil@suse.com>

test/helpers/vagrant.go

@@ -24,7 +24,6 @@ import (
 
 	"github.com/cilium/cilium/test/config"
 	ginkgoext "github.com/cilium/cilium/test/ginkgo-ext"
-	"github.com/cilium/cilium/test/logger"
 
 	"github.com/onsi/ginkgo"
 	"github.com/sirupsen/logrus"
@@ -85,7 +84,7 @@ func GetVagrantSSHMetadata(vmName string) ([]byte, error) {
 	debugVms := func() {
 		cmd := getCmd("vagrant status --machine-readable")
 		output, _ := cmd.CombinedOutput()
-		fmt.Fprintf(&logger.TestLogWriter, "Vagrant status on failure:\n%s\n", output)
+		ginkgoext.Failf("Vagrant status on failure:\n%s\n", output)
 	}
 
 	var stdout, stderr bytes.Buffer
@@ -99,7 +98,7 @@ func GetVagrantSSHMetadata(vmName string) ([]byte, error) {
 
 	err := cmd.Run()
 	if err != nil {
-		fmt.Fprintf(&logger.TestLogWriter, "cmd='%s %s'\noutput:\n%s\nstderr:\n%s\n",
+		ginkgoext.GinkgoPrint("cmd='%s %s'\noutput:\n%s\nstderr:\n%s\n",
 			cmd.Path, strings.Join(cmd.Args, " "), stdout.String(), stderr.String())
 		debugVms()
 		return nil, err