loki-app release v0.6.0

Changed

• Upgraded upstream chart from 3.2.1 to 4.4.2 - see changelog for more information.
• upgraded Loki from 2.6.1 to 2.7.2 - see changelog for more information.
• ⚠️ breaking changes
  • nginx file definition for loki-multi-tenant has moved to a helper template.
• sample configs: updated schema version to v12 (brings performance improvements for S3 - see https://grafana.com/blog/2022/04/11/new-in-grafana-loki-2.5-faster-queries-more-log-sources-so-long-s3-rate-limits-and-more/)
• azure sample values fixed
• doc improvements