dqe: fix python3 compatibility

bt5/erp5_dqe/DocumentTemplateItem/portal_components/document.erp5.DQEDataValidatorClientConnector.py

 import requests
 from json import loads
 from socket import timeout
-from requests import ConnectionError, Timeout
+from requests import ConnectionError as _ConnectionError, Timeout
 from Products.ERP5Type.XMLObject import XMLObject
-from urllib import urlencode
+from six.moves import urllib
 from zLOG import LOG, INFO
 
 class DQEDataValidatorClientConnector(XMLObject):
@@ -23,7 +23,7 @@ class DQEDataValidatorClientConnector(XMLObject):
     try:
       base_url = self.getServerUrl() + method_name + '/'
       response = requests.get(base_url, params=params, timeout=self.getTimeout())
-    except (Timeout, timeout, ConnectionError):
+    except (Timeout, timeout, _ConnectionError):
       raw_response = 'TIMEOUT'
       result_dict = {}
     else:
@@ -41,7 +41,7 @@ class DQEDataValidatorClientConnector(XMLObject):
       archiveExchange = self._getTypeBasedMethod('archiveExchange')
       if archiveExchange is not None:
         archiveExchange(
-          raw_request=base_url + '?' + urlencode(params), # XXX is this correct?
+          raw_request=base_url + '?' + urllib.urlparse.urlencode(params), # XXX is this correct?
           raw_response=raw_response,
           service=service,
           archive_kw=archive_kw,

bt5/erp5_dqe/SkinTemplateItem/portal_skins/erp5_dqe/HTTPExchange_getSentToDQEValueCaption.py

-import urlparse
+from six.moves import urllib
 
 resource_value = context.getResourceValue()
 if not resource_value.isMemberOf('http_exchange_resource/dqe'):
@@ -7,7 +7,7 @@ if not resource_value.isMemberOf('http_exchange_resource/dqe'):
 request = context.getRequest()
 if not request:
   return ''
-query_dict = urlparse.parse_qs(urlparse.urlparse(request).query)
+query_dict = urllib.urlparse.parse_qs(urllib.urlparse.urlparse(request).query)
 dqe_resource_category = context.getPortalObject().portal_categories.http_exchange_resource.dqe
 service_value_to_key_list_dict = {
   dqe_resource_category.DefaultEmail: ('Email', ),