loki: fix migration issue from boltdb to tsdb

loki/values.yaml

@@ -9,6 +9,32 @@ loki:
   auth_enabled: false
   persistence:
     size: 30Gi
+  schemaConfig:
+    configs:
+      - from: 2024-01-01
+        store: boltdb-shipper
+        object_store: filesystem
+        schema: v11
+        index:
+          prefix: index_
+          period: 24h
+      - from: 2024-04-15
+        store: tsdb
+        object_store: filesystem
+        schema: v13
+        index:
+          prefix: index_
+          period: 24h
+  storageConfig:
+    tsdb_shipper:
+      active_index_directory: /data/tsdb-index
+      cache_location: /data/tsdb-cache
+  # compactor:
+  #   working_directory: /data/retention
+  #   compaction_interval: 10m
+  #   retention_enabled: true
+  #   retention_delete_delay: 2h
+  #   retention_delete_worker_count: 150
 monitoring:
   selfMonitoring:
     grafanaAgent: