Add the config to helm and ksonnet too.

Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>

production/helm/templates/loki/configmap.yaml

@@ -22,6 +22,7 @@ data:
         ring:
           store: {{ .Values.loki.config.ingester.lifecycler.ring.store }}
           replication_factor: {{ .Values.loki.config.ingester.lifecycler.ring.replication_factor }}
+      chunk_idle_period: 15m
 
 {{- if .Values.loki.config.schema_configs }}
     schema_config:

production/ksonnet/loki/config.libsonnet

@@ -48,6 +48,8 @@
             },
           },
 
+          chunk_idle_period: '15m',
+
           num_tokens: 512,
           heartbeat_period: '5s',
           join_after: '10s',