Install python-swiftclient when installing swift.

- Fixes bug 1002789.

Change-Id: I8ee54652c6a38c7c226c820366897e53807f664d
diff --git a/stackrc b/stackrc
index 98e6bd4..3c20c87 100644
--- a/stackrc
+++ b/stackrc
@@ -20,6 +20,10 @@
 SWIFT3_BRANCH=master
 
 
+# python swift client library
+SWIFTCLIENT_REPO=https://github.com/openstack/python-swiftclient
+SWIFTCLIENT_BRANCH=master
+
 # image catalog service
 GLANCE_REPO=https://github.com/openstack/glance.git
 GLANCE_BRANCH=master