changes ingester default from 5Gi to 10Gi, prior to PR 3079 correctly…

… fixed the ingester deployment to use this value, however the hard coded value was 10Gi and this default was 5Gi. This is a dissalowed change in kubernetes and causes deployment failures. (#3156)

Changing this back to 10Gi isn't ideal however because anyone who also deployed with the 5Gi is now in the same situation. I think however more people are going to find themselves impacted by this change as it existed for a lot longer as 10Gi than 5Gi.

production/ksonnet/loki/config.libsonnet

@@ -16,7 +16,7 @@
 
     // flags for running ingesters/queriers as a statefulset instead of deployment type.
     stateful_ingesters: false,
-    ingester_pvc_size: '5Gi',
+    ingester_pvc_size: '10Gi',
     ingester_pvc_class: 'fast',
 
     stateful_queriers: false,