Use auth_nova method to create nova network

Authentication is required for nova network creation

Change-Id: Ie0eeda986638e4bd69c4a145bd893e7b9cece3ad

lib/puppet/provider/nova_network/nova_manage.rb

@@ -1,4 +1,7 @@
-Puppet::Type.type(:nova_network).provide(:nova_manage) do
+require File.join(File.dirname(__FILE__), '..','..','..',
+                  'puppet/provider/nova')
+
+Puppet::Type.type(:nova_network).provide(:nova_manage, :parent => Puppet::Provider::Nova) do
 
   desc "Manage nova network"
 
@@ -39,7 +42,7 @@ Puppet::Type.type(:nova_network).provide(:nova_manage) do
       end
     end
 
-    nova('network-create',
+    auth_nova('network-create',
       resource[:label],
       '--fixed-range-v4',
       resource[:name],