[xenserver|compute] added create_vlan request

lib/fog/xenserver/requests/compute/create_vlan.rb

@@ -0,0 +1,35 @@
+module Fog
+  module Compute
+    class XenServer
+
+      class Real
+        
+        # 
+        # Create a VLAN 
+        #
+        # @see http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/?c=VLAN
+        #
+        def create_vlan( pif_ref, vlan_id, network_ref )
+          @connection.request(
+            {
+              :parser => Fog::Parsers::XenServer::Base.new, 
+              :method => 'VLAN.create'
+            }, 
+            pif_ref,
+            vlan_id.to_s,
+            network_ref
+          )
+        end
+      end
+
+      class Mock
+        
+        def create_vlan( pif_ref, vlan_id, network_ref )
+          Fog::Mock.not_implemented
+        end
+        
+      end
+
+    end
+  end
+end