fixup! Add support for Python 3

slapos/networkbench/http.py

 import sys
 import pycurl
 from io import BytesIO
+from slapos.util import bytes2str
 
 def get_curl(buffer, url):
   curl = pycurl.Curl()
@@ -43,7 +44,7 @@ def request(url, expected_dict):
 
   expected_text = expected_dict.get("expected_text", None)
   if expected_text is not None and \
-      str(expected_text) not in str(body):
+      str(expected_text) not in bytes2str(body):
     result = "UNEXPECTED (%s not in page content)" % (expected_text)
 
   curl.close()