Updating create server behaviour and defaults

lib/fog/gce/compute.rb

@@ -74,10 +74,6 @@ module Fog
           @api_url = base_url + api_version + '/projects/'
           @client = ::Google::APIClient.new
           @compute = @client.discovered_api('compute', api_version)
-
-          @default_image = 'ubuntu-12-04-v20120912'
-          @default_zone = 'us-east1-a'
-          @default_machine = 'n1-standard-1'
           @default_network = 'default'
 
           auth_util = CommandLineOAuthHelper.new(api_scope_url)

lib/fog/gce/models/compute/server.rb

@@ -6,8 +6,7 @@ module Fog
 
       class Server < Fog::Model
 
-        identity :name
-
+        attribute :name
         attribute :image_name, :aliases => 'image'
         attribute :network_interfaces, :aliases => 'networkInterfaces'
         attribute :state, :aliases => 'status'
@@ -15,8 +14,8 @@ module Fog
         attribute :machine_type, :aliases => 'machineType'
 
         def destroy
-          requires :identity
-          connection.delete_server(identity)
+          requires :name
+          connection.delete_server(name)
         end
 
         def image
@@ -36,14 +35,13 @@ module Fog
         end
 
         def save
-          requires :identity
+          requires :name
           requires :image_name
-          requires :zone_name
           requires :machine_type
+          requires :zone_name
 
-          data = connection.insert_server(identity, image_name=image_name,
-                                          zone_name=zone_name,
-                                          machine_type=machine_type)
+          data = connection.insert_server(name, image_name, zone_name,
+                                          machine_type)
           connection.servers.merge_attributes()
         end
 

lib/fog/gce/requests/compute/insert_server.rb

@@ -12,11 +12,10 @@ module Fog
 
       class Real
 
-        def insert_server(server_name,
-                          image_name=@default_image,
-                          zone_name=@default_zone,
-                          machine_name=@default_machine,
+        def insert_server(server_name, image_name,
+                          zone_name, machine_name,
                           network_name=@default_network)
+
           api_method = @compute.instances.insert
           parameters = {
             'project' => @project,