Update quobyte client API to v0.1.8

This update picks up https://github.com/quobyte/api/pull/19 which adds
the needed `SetTransport` option. With this update, we can add the IP
deny list into quobyte operations.

vendor/github.com/quobyte/api/rpc_client.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"log"
 	"math/rand"
@@ -112,7 +113,12 @@ func (client QuobyteClient) sendRequest(method string, request interface{}, resp
 	defer resp.Body.Close()
 
 	if resp.StatusCode < 200 || resp.StatusCode > 299 {
-		log.Printf("Warning: HTTP status code for request is %s\n", strconv.Itoa(resp.StatusCode))
+		log.Printf("Warning: HTTP status code for request is %s\n",
+			strconv.Itoa(resp.StatusCode))
+		if resp.StatusCode == 401 {
+			return errors.New("Unable to authenticate with Quobyte API service")
+		}
+		return fmt.Errorf("JsonRPC failed with error code %d", resp.StatusCode)
 	}
 	return decodeResponse(resp.Body, &response)
 }