[Compute|OpenStack] match auth response to stable/diablo branch of keystone

This may require more tweaks for Essex, or when Keystone Light lands.

I also believe v1.0 auth may be broken by not sending back the
X-Server-Management-Url header.

lib/fog/openstack.rb

@@ -79,12 +79,14 @@ module Fog
       @compute_service_name = options[:openstack_compute_service_name]
 
       req_body= {
-        'passwordCredentials'  => {
-          'username' => @openstack_username,
-          'password' => @openstack_api_key
+        'auth' => {
+          'passwordCredentials'  => {
+            'username' => @openstack_username,
+            'password' => @openstack_api_key
+          }
         }
       }
-      req_body['tenantId'] = @openstack_tenant if @openstack_tenant
+      req_body['auth']['tenantName'] = @openstack_tenant if @openstack_tenant
 
       response = connection.request({
         :expects  => [200, 204],
@@ -96,9 +98,9 @@ module Fog
       })
       body=MultiJson.decode(response.body)
      
-      if body['auth']['serviceCatalog'] and body['auth']['serviceCatalog'][@compute_service_name] and body['auth']['serviceCatalog'][@compute_service_name][0] then
-        mgmt_url = body['auth']['serviceCatalog'][@compute_service_name][0]['publicURL']
-        token = body['auth']['token']['id']
+      if svc = body['access']['serviceCatalog'].detect{|x| x['name'] == @compute_service_name}
+        mgmt_url = svc['endpoints'].detect{|x| x['publicURL']}['publicURL']
+        token = body['access']['token']['id']
         return {
           :token => token,
           :server_management_url => mgmt_url

lib/fog/openstack/compute.rb

@@ -186,8 +186,8 @@ module Fog
             raise Fog::Compute::OpenStack::ServiceUnavailable.new(
                     "OpenStack binding only supports version 1.1")
           end
-          # Add tenant
-          @path += @openstack_tenant if @openstack_tenant
+          # Add tenant (done by keystone now for 1.1 auth api)
+          # @path += @openstack_tenant if @openstack_tenant
           @port   = uri.port
           @scheme = uri.scheme
         end