Add cce v2 and some other features

Author: duanliguo

bce/config.go

@@ -26,7 +26,7 @@ import (
 
 // Constants and default values for the package bce
 const (
-	SDK_VERSION                          = "0.9.16"
+	SDK_VERSION                          = "0.9.15"
 	URI_PREFIX                           = "/" // now support uri without prefix "v1" so just set root path
 	DEFAULT_DOMAIN                       = "baidubce.com"
 	DEFAULT_PROTOCOL                     = "http"