checking in latest sync_slices code. move get_next_subnet to sync_slices
diff --git a/planetstack/openstack/driver.py b/planetstack/openstack/driver.py
index febac32..8224c17 100644
--- a/planetstack/openstack/driver.py
+++ b/planetstack/openstack/driver.py
@@ -1,4 +1,5 @@
 import commands
+import hashlib
 from planetstack.config import Config
 
 try: