changed geant lambda key to lower case

inventory_provider/tasks/worker.py

@@ -210,7 +210,8 @@ def update_geant_lambdas():
         r.delete(key)
     with db.connection(InventoryTask.config["ops-db"]) as cx:
         for ld in opsdb.get_geant_lambdas(cx):
-            r.set('opsdb:geant_lambdas:%s' % ld['name'], json.dumps(ld))
+            r.set('opsdb:geant_lambdas:%s' % ld['name'].lower(),
+                  json.dumps(ld))
 
     logger.debug('<<< geant_lambdas')