Fix XenAPINFSDriver's path

Fixes bug 1087329

As the driver was moved to a different location, devstack script needed
an update.

Change-Id: Iaa1db94a84b6e9cb99514ce886025600809e9f29
diff --git a/lib/cinder b/lib/cinder
index d47c83a..5d2c596 100644
--- a/lib/cinder
+++ b/lib/cinder
@@ -152,7 +152,7 @@
     if [ "$CINDER_DRIVER" == "XenAPINFS" ]; then
         (
             set -u
-            iniset $CINDER_CONF DEFAULT volume_driver "cinder.volume.xenapi_sm.XenAPINFSDriver"
+            iniset $CINDER_CONF DEFAULT volume_driver "cinder.volume.drivers.xenapi.sm.XenAPINFSDriver"
             iniset $CINDER_CONF DEFAULT xenapi_connection_url "$CINDER_XENAPI_CONNECTION_URL"
             iniset $CINDER_CONF DEFAULT xenapi_connection_username "$CINDER_XENAPI_CONNECTION_USERNAME"
             iniset $CINDER_CONF DEFAULT xenapi_connection_password "$CINDER_XENAPI_CONNECTION_PASSWORD"