e2e,acceptance: Cover enterprise runners (#1124)

Adds various code and changes I have used while testing #1062

testing/getenv.go

@@ -5,12 +5,15 @@ import (
 	"testing"
 )
 
-func Getenv(t *testing.T, name string) string {
+func Getenv(t *testing.T, name string, opts ...string) string {
 	t.Helper()
 
 	v := os.Getenv(name)
 	if v == "" {
-		t.Fatal(name + " must be set")
+		if len(opts) == 0 {
+			t.Fatal(name + " must be set")
+		}
+		v = opts[0]
 	}
 	return v
 }

testing/git.go

@@ -16,6 +16,7 @@ type GitRepo struct {
 	Name          string
 	CommitMessage string
 	Contents      map[string][]byte
+	Branch        string
 
 	runtime.Cmdr
 }
@@ -43,6 +44,11 @@ func (g *GitRepo) Sync(ctx context.Context) error {
 
 	for path, content := range g.Contents {
 		absPath := filepath.Join(dir, path)
+		d := filepath.Dir(absPath)
+
+		if err := os.MkdirAll(d, 0755); err != nil {
+			return fmt.Errorf("error creating dir %s: %v", d, err)
+		}
 
 		if err := os.WriteFile(absPath, content, 0755); err != nil {
 			return fmt.Errorf("error writing %s: %w", path, err)
@@ -89,7 +95,7 @@ func (g *GitRepo) gitCommitCmd(ctx context.Context, dir, msg string) *exec.Cmd {
 }
 
 func (g *GitRepo) gitPushCmd(ctx context.Context, dir string) *exec.Cmd {
-	cmd := exec.CommandContext(ctx, "git", "push", "origin", "master")
+	cmd := exec.CommandContext(ctx, "git", "push", "origin", g.Branch)
 	cmd.Dir = dir
 	return cmd
 }

testing/testing.go

@@ -323,6 +323,11 @@ func (k *Kind) Start(ctx context.Context) error {
 		kindConfig := []byte(fmt.Sprintf(`kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
 name: %s
+networking:
+  apiServerAddress: 0.0.0.0
+nodes:
+  - role: control-plane
+  - role: worker
 `, k.Name))
 
 		if err := os.WriteFile(f.Name(), kindConfig, 0644); err != nil {