Replace godep with dep

vendor/github.com/emicklei/go-restful/jsr311.go

@@ -41,9 +41,29 @@ func (r RouterJSR311) SelectRoute(
 
 // http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
 func (r RouterJSR311) detectRoute(routes []Route, httpRequest *http.Request) (*Route, error) {
+	ifOk := []Route{}
+	for _, each := range routes {
+		ok := true
+		for _, fn := range each.If {
+			if !fn(httpRequest) {
+				ok = false
+				break
+			}
+		}
+		if ok {
+			ifOk = append(ifOk, each)
+		}
+	}
+	if len(ifOk) == 0 {
+		if trace {
+			traceLogger.Printf("no Route found (from %d) that passes conditional checks", len(routes))
+		}
+		return nil, NewError(http.StatusNotFound, "404: Not Found")
+	}
+
 	// http method
 	methodOk := []Route{}
-	for _, each := range routes {
+	for _, each := range ifOk {
 		if httpRequest.Method == each.Method {
 			methodOk = append(methodOk, each)
 		}