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/runner.go

@@ -0,0 +1,113 @@
+package leafnodes
+
+import (
+	"fmt"
+	"github.com/onsi/ginkgo/internal/codelocation"
+	"github.com/onsi/ginkgo/internal/failer"
+	"github.com/onsi/ginkgo/types"
+	"reflect"
+	"time"
+)
+
+type runner struct {
+	isAsync          bool
+	asyncFunc        func(chan<- interface{})
+	syncFunc         func()
+	codeLocation     types.CodeLocation
+	timeoutThreshold time.Duration
+	nodeType         types.SpecComponentType
+	componentIndex   int
+	failer           *failer.Failer
+}
+
+func newRunner(body interface{}, codeLocation types.CodeLocation, timeout time.Duration, failer *failer.Failer, nodeType types.SpecComponentType, componentIndex int) *runner {
+	bodyType := reflect.TypeOf(body)
+	if bodyType.Kind() != reflect.Func {
+		panic(fmt.Sprintf("Expected a function but got something else at %v", codeLocation))
+	}
+
+	runner := &runner{
+		codeLocation:     codeLocation,
+		timeoutThreshold: timeout,
+		failer:           failer,
+		nodeType:         nodeType,
+		componentIndex:   componentIndex,
+	}
+
+	switch bodyType.NumIn() {
+	case 0:
+		runner.syncFunc = body.(func())
+		return runner
+	case 1:
+		if !(bodyType.In(0).Kind() == reflect.Chan && bodyType.In(0).Elem().Kind() == reflect.Interface) {
+			panic(fmt.Sprintf("Must pass a Done channel to function at %v", codeLocation))
+		}
+
+		wrappedBody := func(done chan<- interface{}) {
+			bodyValue := reflect.ValueOf(body)
+			bodyValue.Call([]reflect.Value{reflect.ValueOf(done)})
+		}
+
+		runner.isAsync = true
+		runner.asyncFunc = wrappedBody
+		return runner
+	}
+
+	panic(fmt.Sprintf("Too many arguments to function at %v", codeLocation))
+}
+
+func (r *runner) run() (outcome types.SpecState, failure types.SpecFailure) {
+	if r.isAsync {
+		return r.runAsync()
+	} else {
+		return r.runSync()
+	}
+}
+
+func (r *runner) runAsync() (outcome types.SpecState, failure types.SpecFailure) {
+	done := make(chan interface{}, 1)
+
+	go func() {
+                finished := false
+
+		defer func() {
+			if e := recover(); e != nil || !finished {
+				r.failer.Panic(codelocation.New(2), e)
+				select {
+				case <-done:
+					break
+				default:
+					close(done)
+				}
+			}
+		}()
+
+		r.asyncFunc(done)
+                finished = true
+	}()
+
+	select {
+	case <-done:
+	case <-time.After(r.timeoutThreshold):
+		r.failer.Timeout(r.codeLocation)
+	}
+
+	failure, outcome = r.failer.Drain(r.nodeType, r.componentIndex, r.codeLocation)
+	return
+}
+func (r *runner) runSync() (outcome types.SpecState, failure types.SpecFailure) {
+        finished := false
+
+	defer func() {
+		if e := recover(); e != nil || !finished {
+			r.failer.Panic(codelocation.New(2), e)
+		}
+
+		failure, outcome = r.failer.Drain(r.nodeType, r.componentIndex, r.codeLocation)
+	}()
+
+	r.syncFunc()
+        finished = true
+
+	return
+}