Adding initial file structure and list def rules
diff --git a/openstack/compute/v2/extensions/defsecrules/requests.go b/openstack/compute/v2/extensions/defsecrules/requests.go
new file mode 100644
index 0000000..66337a5
--- /dev/null
+++ b/openstack/compute/v2/extensions/defsecrules/requests.go
@@ -0,0 +1,15 @@
+package defsecrules
+
+import (
+	"github.com/rackspace/gophercloud"
+	"github.com/rackspace/gophercloud/pagination"
+)
+
+// List will return a collection of default rules.
+func List(client *gophercloud.ServiceClient) pagination.Pager {
+	createPage := func(r pagination.PageResult) pagination.Page {
+		return DefaultRulePage{pagination.SinglePageBase(r)}
+	}
+
+	return pagination.NewPager(client, rootURL(client), createPage)
+}