fix: k8s dependency version: emicklei/go-restful

`emicklei/go-restful` is used by:
- `k8s.io/client-go`  (Godeps)

Refs:
- e121606b0d/Godeps/Godeps.json

vendor/github.com/emicklei/go-restful/web_service.go

@@ -1,7 +1,7 @@
 package restful
 
 import (
-	"fmt"
+	"errors"
 	"os"
 	"sync"
 
@@ -36,9 +36,6 @@ func (w *WebService) SetDynamicRoutes(enable bool) {
 
 // compilePathExpression ensures that the path is compiled into a RegEx for those routers that need it.
 func (w *WebService) compilePathExpression() {
-	if len(w.rootPath) == 0 {
-		w.Path("/") // lazy initialize path
-	}
 	compiled, err := newPathExpression(w.rootPath)
 	if err != nil {
 		log.Printf("[restful] invalid path:%s because:%v", w.rootPath, err)
@@ -54,12 +51,15 @@ func (w *WebService) ApiVersion(apiVersion string) *WebService {
 }
 
 // Version returns the API version for documentation purposes.
-func (w WebService) Version() string { return w.apiVersion }
+func (w *WebService) Version() string { return w.apiVersion }
 
 // Path specifies the root URL template path of the WebService.
 // All Routes will be relative to this path.
 func (w *WebService) Path(root string) *WebService {
 	w.rootPath = root
+	if len(w.rootPath) == 0 {
+		w.rootPath = "/"
+	}
 	w.compilePathExpression()
 	return w
 }
@@ -155,15 +155,20 @@ func (w *WebService) Route(builder *RouteBuilder) *WebService {
 // RemoveRoute removes the specified route, looks for something that matches 'path' and 'method'
 func (w *WebService) RemoveRoute(path, method string) error {
 	if !w.dynamicRoutes {
-		return fmt.Errorf("dynamic routes are not enabled.")
+		return errors.New("dynamic routes are not enabled.")
 	}
 	w.routesLock.Lock()
 	defer w.routesLock.Unlock()
+	newRoutes := make([]Route, (len(w.routes) - 1))
+	current := 0
 	for ix := range w.routes {
 		if w.routes[ix].Method == method && w.routes[ix].Path == path {
-			w.routes = append(w.routes[:ix], w.routes[ix+1:]...)
+			continue
 		}
+		newRoutes[current] = w.routes[ix]
+		current = current + 1
 	}
+	w.routes = newRoutes
 	return nil
 }
 
@@ -187,7 +192,7 @@ func (w *WebService) Consumes(accepts ...string) *WebService {
 }
 
 // Routes returns the Routes associated with this WebService
-func (w WebService) Routes() []Route {
+func (w *WebService) Routes() []Route {
 	if !w.dynamicRoutes {
 		return w.routes
 	}
@@ -202,12 +207,12 @@ func (w WebService) Routes() []Route {
 }
 
 // RootPath returns the RootPath associated with this WebService. Default "/"
-func (w WebService) RootPath() string {
+func (w *WebService) RootPath() string {
 	return w.rootPath
 }
 
 // PathParameters return the path parameter names for (shared amoung its Routes)
-func (w WebService) PathParameters() []*Parameter {
+func (w *WebService) PathParameters() []*Parameter {
 	return w.pathParameters
 }
 
@@ -224,7 +229,7 @@ func (w *WebService) Doc(plainText string) *WebService {
 }
 
 // Documentation returns it.
-func (w WebService) Documentation() string {
+func (w *WebService) Documentation() string {
 	return w.documentation
 }