Update Keystone v3 to use new util location
diff --git a/openstack/identity/v3/endpoints/requests.go b/openstack/identity/v3/endpoints/requests.go
index 91958da..4bec427 100644
--- a/openstack/identity/v3/endpoints/requests.go
+++ b/openstack/identity/v3/endpoints/requests.go
@@ -5,7 +5,6 @@
 
 	"github.com/racker/perigee"
 	"github.com/rackspace/gophercloud"
-	"github.com/rackspace/gophercloud/openstack"
 	"github.com/rackspace/gophercloud/pagination"
 )
 
@@ -98,7 +97,7 @@
 		return EndpointPage{pagination.LinkedPageBase{PageResult: r}}
 	}
 
-	u := listURL(client) + openstack.BuildQuery(q)
+	u := listURL(client) + gophercloud.BuildQuery(q)
 	return pagination.NewPager(client, u, createPage)
 }