Don't use posixpath for URLs

Use URL functions instead.

Fixes bug #1208618

Change-Id: I27bb29a6422200a1a522c50335e5d93d495ec429

glanceclient/common/http.py

@@ -16,7 +16,6 @@
 import copy
 import httplib
 import logging
-import posixpath
 import socket
 import StringIO
 import struct
@@ -189,8 +188,8 @@ class HTTPClient(object):
 
         try:
             if self.endpoint_path:
-                url = '%s/%s' % (self.endpoint_path, url)
-            conn_url = posixpath.normpath(url)
+                url = urlparse.urljoin(self.endpoint_path, url)
+            conn_url = urlparse.urlsplit(url).geturl()
             # Note(flaper87): Ditto, headers / url
             # encoding to make httplib happy.
             conn_url = strutils.safe_encode(conn_url)