Add gophercloud openstack/networking/v2/extensions

Aka github.com/rackspace/gophercloud/openstack/networking/v2/extensions

vendor/github.com/rackspace/gophercloud/openstack/networking/v2/extensions/delegate.go

@@ -0,0 +1,41 @@
+package extensions
+
+import (
+	"github.com/rackspace/gophercloud"
+	common "github.com/rackspace/gophercloud/openstack/common/extensions"
+	"github.com/rackspace/gophercloud/pagination"
+)
+
+// Extension is a single OpenStack extension.
+type Extension struct {
+	common.Extension
+}
+
+// GetResult wraps a GetResult from common.
+type GetResult struct {
+	common.GetResult
+}
+
+// ExtractExtensions interprets a Page as a slice of Extensions.
+func ExtractExtensions(page pagination.Page) ([]Extension, error) {
+	inner, err := common.ExtractExtensions(page)
+	if err != nil {
+		return nil, err
+	}
+	outer := make([]Extension, len(inner))
+	for index, ext := range inner {
+		outer[index] = Extension{ext}
+	}
+	return outer, nil
+}
+
+// Get retrieves information for a specific extension using its alias.
+func Get(c *gophercloud.ServiceClient, alias string) GetResult {
+	return GetResult{common.Get(c, alias)}
+}
+
+// List returns a Pager which allows you to iterate over the full collection of extensions.
+// It does not accept query parameters.
+func List(c *gophercloud.ServiceClient) pagination.Pager {
+	return common.List(c)
+}