Update loki preset to work with the latest loki chart

Signed-off-by: Pete Wall <pete.wall@grafana.com>

Author: petewall

tools/helm-test/manifests/presets/preset-loki.yaml

@@ -27,10 +27,11 @@ spec:
             index:
               prefix: loki_index_
               period: 24h
-      ingester:
-        chunk_encoding: snappy
-      tracing:
-        enabled: true
+      storage:
+        bucketNames:
+          chunks: chunks
+          ruler: ruler
+          admin: admin
       querier:
         # Default is 4, if you have enough memory and CPU you can increase, reduce if OOMing
         max_concurrent: 2
@@ -54,40 +55,16 @@ spec:
           cpu: 1
           memory: 1Gi
 
-    # Enable minio for storage
-    minio:
-      enabled: true
-
     # Zero out replica counts of other deployment modes
     backend:
       replicas: 0
-    ingester:
-      replicas: 0
-    querier:
-      replicas: 0
-    queryFrontend:
-      replicas: 0
-    queryScheduler:
-      replicas: 0
-    distributor:
-      replicas: 0
-    compactor:
-      replicas: 0
-    indexGateway:
-      replicas: 0
-    bloomCompactor:
-      replicas: 0
     write:
       replicas: 0
-    bloomGateway:
-      replicas: 0
     read:
       replicas: 0
 
     chunksCache:
       enabled: false
-    resultsCache:
-      enabled: false
     lokiCanary:
       enabled: false
     test: