[OPB-37] adding loki log collector

upgrading to newer abstracto version
adding some info to readme

deployment/image-packaging/src/main/docker/loki/loki.yml

@@ -0,0 +1,66 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 9096
+
+ingester:
+  wal:
+    enabled: true
+    dir: /tmp/wal
+  lifecycler:
+    address: 127.0.0.1
+    ring:
+      kvstore:
+        store: inmemory
+      replication_factor: 1
+    final_sleep: 0s
+  chunk_idle_period: 1h
+  max_chunk_age: 1h
+  chunk_target_size: 1048576
+  chunk_retain_period: 30s
+  max_transfer_retries: 0
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: boltdb-shipper
+      object_store: filesystem
+      schema: v11
+      index:
+        prefix: index_
+        period: 24h
+
+storage_config:
+  boltdb_shipper:
+    active_index_directory: /tmp/loki/boltdb-shipper-active
+    cache_location: /tmp/loki/boltdb-shipper-cache
+    cache_ttl: 24h
+    shared_store: filesystem
+  filesystem:
+    directory: /tmp/loki/chunks
+
+compactor:
+  working_directory: /tmp/loki/boltdb-shipper-compactor
+  shared_store: filesystem
+
+limits_config:
+  reject_old_samples: true
+  reject_old_samples_max_age: 168h
+
+chunk_store_config:
+  max_look_back_period: 0s
+
+table_manager:
+  retention_deletes_enabled: true
+  retention_period: 360h
+
+ruler:
+  storage:
+    type: local
+    local:
+      directory: /tmp/loki/rules
+  rule_path: /tmp/loki/rules-temp
+  ring:
+    kvstore:
+      store: inmemory