Ensure nova is compatible with WebOb 1.2+

Fixes bug 888371

Change-Id: I965c15f9f18b835b666c60b2ab1e6089c0fb4121

nova/api/openstack/v2/contrib/floating_ip_dns.py

@@ -113,7 +113,7 @@ class FloatingIPDNSController(object):
            names.  if name is specified, query for ips.
            Quoted domain (aka 'zone') specified as id."""
         context = req.environ['nova.context']
-        params = req.str_GET
+        params = req.GET
         floating_ip = params['ip'] if 'ip' in params else ""
         name = params['name'] if 'name' in params else ""
         zone = _unquote_zone(id)
@@ -193,7 +193,7 @@ class FloatingIPDNSController(object):
     def delete(self, req, id):
         """Delete the entry identified by req and id. """
         context = req.environ['nova.context']
-        params = req.str_GET
+        params = req.GET
         name = params['name'] if 'name' in params else ""
         zone = _unquote_zone(id)
 

nova/api/openstack/v2/extensions.py

@@ -162,6 +162,7 @@ class RequestExtensionController(object):
             pre_handler(req)
 
         res = req.get_response(self.application)
+        res.environ = req.environ
 
         # Don't call extensions if the main application returned an
         # unsuccessful status

nova/api/openstack/v2/images.py

@@ -113,11 +113,11 @@ class Controller(wsgi.Controller):
         :retval a dict of key/value filters
         """
         filters = {}
-        for param in req.str_params:
+        for param in req.params:
             if param in SUPPORTED_FILTERS or param.startswith('property-'):
                 # map filter name or carry through if property-*
                 filter_name = SUPPORTED_FILTERS.get(param, param)
-                filters[filter_name] = req.str_params.get(param)
+                filters[filter_name] = req.params.get(param)
         return filters
 
     @wsgi.serializers(xml=ImageTemplate)

nova/objectstore/s3server.py

@@ -136,7 +136,7 @@ class BaseRequestHandler(object):
         return self.response
 
     def get_argument(self, arg, default):
-        return self.request.str_params.get(arg, default)
+        return self.request.params.get(arg, default)
 
     def set_header(self, header, value):
         self.response.headers[header] = value