Treat index id as auto-generated field

libs/ktem/flowsettings.py

@@ -164,7 +164,6 @@ SETTINGS_REASONING = {
 KH_INDEX_TYPES = ["ktem.index.file.FileIndex"]
 KH_INDICES = [
     {
-        "id": 1,
         "name": "File",
         "config": {},
         "index_type": "ktem.index.file.FileIndex",

libs/ktem/ktem/index/manager.py

@@ -177,7 +177,7 @@ class IndexManager:
         self.load_index_types()
 
         for index in settings.KH_INDICES:
-            if not self.exists(index["id"]):
+            if not self.exists(name=index["name"]):
                 self.build_index(**index)
 
         with Session(engine) as sess: