Moving extensions and API versions into different sub-packages; fixing test helper methods
diff --git a/openstack/networking/v2/extensions/requests.go b/openstack/networking/v2/extensions/requests.go
new file mode 100644
index 0000000..b406c51
--- /dev/null
+++ b/openstack/networking/v2/extensions/requests.go
@@ -0,0 +1,22 @@
+package networks
+
+import (
+	"github.com/racker/perigee"
+	"github.com/rackspace/gophercloud"
+)
+
+func Get(c *gophercloud.ServiceClient, name string) (*Extension, error) {
+	var ext Extension
+	_, err := perigee.Request("GET", ExtensionURL(c, name), perigee.Options{
+		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		Results: &struct {
+			Extension *Extension `json:"extension"`
+		}{&ext},
+		OkCodes: []int{200},
+	})
+
+	if err != nil {
+		return nil, err
+	}
+	return &ext, nil
+}