loki-app release v0.2.0

Changed

• Upgrade to upstream chart version 0.33.0
• Upgrade loki to version 2.2.1
• Add loki.existingSecretForConfig to make it possible to specify an existing secret for loki configuration
• Breaking: Upgrades require manual intervention. A change in the StatefulSet’s podManagementPolicy requires existing pods to be manually deleted. See this link for instructions.
• Breaking: Configuration path gateway.nginxConfig changed to gateway.nginxConfig.file.