mimir-app release v0.16.0

Upgrade chart to version 5.6.0
- Add the possibility to create a dedicated serviceAccount for the alertmanager component by setting alertmanager.serviceAcount.create to true in the values.
- Add support for setting type and internal traffic policy for Kubernetes service. Set internalTrafficPolicy=Cluster by default in all services with type ClusterIP.
- more at https://github.com/grafana/mimir/blob/mimir-distributed-5.6.0/operations/helm/charts/mimir-distributed/CHANGELOG.md#560
Upgrade mimir to 2.15.0
- Ingester: Change -initial-delay for circuit breakers to begin when the first request is received, rather than at breaker activation.
- Query-frontend: apply query pruning before query sharding instead of after.
- Ingester: Replace cortex_discarded_samples_total label from sample-out-of-bounds to sample-timestamp-too-old.
- Querier: The . pattern in regular expressions in PromQL matches newline characters. With this change regular expressions like .* match strings that include \n. To maintain the old behaviour, you will have to change regular expressions by replacing all . patterns with [^\n], e.g. foo[^\n]*. This upgrades PromQL compatibility from Prometheus 2.0 to 3.0. #9844
- Ingester: improve performance of reading the WAL.
- Querier: improve performance and memory consumption of queries that select many series.
- more at https://github.com/grafana/mimir/blob/main/CHANGELOG.md#2150