Update paste config to return version info

Change-Id: I67edb5c9aab6899c105666a4541918bad9116386
diff --git a/files/keystone.conf b/files/keystone.conf
index 3167c0f..45044f7 100644
--- a/files/keystone.conf
+++ b/files/keystone.conf
@@ -69,10 +69,24 @@
 [pipeline:admin_api]
 pipeline = token_auth admin_token_auth json_body debug ec2_extension crud_extension admin_service
 
+[app:public_version_service]
+paste.app_factory = keystone.service:public_version_app_factory
+
+[app:admin_version_service]
+paste.app_factory = keystone.service:admin_version_app_factory
+
+[pipeline:public_version_api]
+pipeline = public_version_service
+
+[pipeline:admin_version_api]
+pipeline = admin_version_service
+
 [composite:main]
 use = egg:Paste#urlmap
 /v2.0 = public_api
+/ = public_version_api
 
 [composite:admin]
 use = egg:Paste#urlmap
 /v2.0 = admin_api
+/ = admin_version_service