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/failer/failer.go

@@ -0,0 +1,92 @@
+package failer
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/onsi/ginkgo/types"
+)
+
+type Failer struct {
+	lock    *sync.Mutex
+	failure types.SpecFailure
+	state   types.SpecState
+}
+
+func New() *Failer {
+	return &Failer{
+		lock:  &sync.Mutex{},
+		state: types.SpecStatePassed,
+	}
+}
+
+func (f *Failer) Panic(location types.CodeLocation, forwardedPanic interface{}) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	if f.state == types.SpecStatePassed {
+		f.state = types.SpecStatePanicked
+		f.failure = types.SpecFailure{
+			Message:        "Test Panicked",
+			Location:       location,
+			ForwardedPanic: fmt.Sprintf("%v", forwardedPanic),
+		}
+	}
+}
+
+func (f *Failer) Timeout(location types.CodeLocation) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	if f.state == types.SpecStatePassed {
+		f.state = types.SpecStateTimedOut
+		f.failure = types.SpecFailure{
+			Message:  "Timed out",
+			Location: location,
+		}
+	}
+}
+
+func (f *Failer) Fail(message string, location types.CodeLocation) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	if f.state == types.SpecStatePassed {
+		f.state = types.SpecStateFailed
+		f.failure = types.SpecFailure{
+			Message:  message,
+			Location: location,
+		}
+	}
+}
+
+func (f *Failer) Drain(componentType types.SpecComponentType, componentIndex int, componentCodeLocation types.CodeLocation) (types.SpecFailure, types.SpecState) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	failure := f.failure
+	outcome := f.state
+	if outcome != types.SpecStatePassed {
+		failure.ComponentType = componentType
+		failure.ComponentIndex = componentIndex
+		failure.ComponentCodeLocation = componentCodeLocation
+	}
+
+	f.state = types.SpecStatePassed
+	f.failure = types.SpecFailure{}
+
+	return failure, outcome
+}
+
+func (f *Failer) Skip(message string, location types.CodeLocation) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	if f.state == types.SpecStatePassed {
+		f.state = types.SpecStateSkipped
+		f.failure = types.SpecFailure{
+			Message:  message,
+			Location: location,
+		}
+	}
+}