Add sanity check to resolve problem seen on servers

brian_dashboard_manager/routes/update.py

@@ -40,6 +40,13 @@ def should_provision():
             timestamp = datetime.datetime.fromtimestamp(
                 state.get('timestamp', 1))
 
+            now = datetime.datetime.now()
+            if provisioning and (now - timestamp).total_seconds() > 86400:
+                # if we stay in provisioning state
+                # for over a day, we probably restarted
+                # and the state file is out of sync.
+                provisioning = False
+
             can_provision = not provisioning
             return can_provision, timestamp
     except FileNotFoundError: