Fix TypeError for Indicators resource

This change fixes the TypeError that was being thrown because the
`connection` attribute was being accessed before it was set.

Change-Id: Ib14684046f520d907e8197e0abf310226b9d5693

sushy_tools/emulator/resources/indicators/staticdriver.py

@@ -33,13 +33,14 @@ class StaticDriver(DriverBase):
         cls._config = config
 
         cls._indicators = memoize.PersistentDict()
-        cls._indicators.update(
-            config.get('SUSHY_EMULATOR_INDICATOR_LEDS', {}))
 
         if hasattr(cls._indicators, 'make_permanent'):
             cls._indicators.make_permanent(
                 config.get('SUSHY_EMULATOR_STATE_DIR'), 'indicators')
 
+        cls._indicators.update(
+            config.get('SUSHY_EMULATOR_INDICATOR_LEDS', {}))
+
         return cls
 
     @property