modify default schema to https

Author: dt3310321

qcloud_cos/cos_client.py

@@ -46,7 +46,7 @@ def __init__(self, Appid=None, Region=None, Secret_id=None, Secret_key=None, Tok
         self._timeout = Timeout
 
         if Scheme is None:
-            Scheme = u'http'
+            Scheme = u'https'
         Scheme = to_unicode(Scheme)
         if(Scheme != u'http' and Scheme != u'https'):
             raise CosClientError('Scheme can be only set to http/https')