Revert vendor directory to support old golang (GOPATH mode)

gomodule is still in progress to migrate for now, hence multus
team decide to keep vendor directory to support build without
gomodule.

vendor/github.com/onsi/ginkgo/internal/leafnodes/suite_nodes.go

@@ -0,0 +1,54 @@
+package leafnodes
+
+import (
+	"github.com/onsi/ginkgo/internal/failer"
+	"github.com/onsi/ginkgo/types"
+	"time"
+)
+
+type SuiteNode interface {
+	Run(parallelNode int, parallelTotal int, syncHost string) bool
+	Passed() bool
+	Summary() *types.SetupSummary
+}
+
+type simpleSuiteNode struct {
+	runner  *runner
+	outcome types.SpecState
+	failure types.SpecFailure
+	runTime time.Duration
+}
+
+func (node *simpleSuiteNode) Run(parallelNode int, parallelTotal int, syncHost string) bool {
+	t := time.Now()
+	node.outcome, node.failure = node.runner.run()
+	node.runTime = time.Since(t)
+
+	return node.outcome == types.SpecStatePassed
+}
+
+func (node *simpleSuiteNode) Passed() bool {
+	return node.outcome == types.SpecStatePassed
+}
+
+func (node *simpleSuiteNode) Summary() *types.SetupSummary {
+	return &types.SetupSummary{
+		ComponentType: node.runner.nodeType,
+		CodeLocation:  node.runner.codeLocation,
+		State:         node.outcome,
+		RunTime:       node.runTime,
+		Failure:       node.failure,
+	}
+}
+
+func NewBeforeSuiteNode(body interface{}, codeLocation types.CodeLocation, timeout time.Duration, failer *failer.Failer) SuiteNode {
+	return &simpleSuiteNode{
+		runner: newRunner(body, codeLocation, timeout, failer, types.SpecComponentTypeBeforeSuite, 0),
+	}
+}
+
+func NewAfterSuiteNode(body interface{}, codeLocation types.CodeLocation, timeout time.Duration, failer *failer.Failer) SuiteNode {
+	return &simpleSuiteNode{
+		runner: newRunner(body, codeLocation, timeout, failer, types.SpecComponentTypeAfterSuite, 0),
+	}
+}