fix: loki schema config update

[UnicornChance]

Description

TSDB has been the recommended store for Loki for several releases now. This set the default schemaConfig to TSDB and managed upgrading current clusters to TSDB.

Includes unit tests for the necessary logic utilities.

Related Issue

Fixes #782

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Steps to Validate

• deploying uds core should result in a loki secret ( name: Loki, namespace: Loki ) that contains the config.yaml for configuring loki. That secret should have a schema config entry for TSDB that should start being used 2 days in the future.
• upgrading an existing cluster that has not been upgraded should upgrade that secret to use the TSDB two days in the future
• upgrading an existing cluster that already has the TSDB configured will not trigger the update again ( checks for annotation )

Checklist before merging

• Test, docs, adr added or updated as needed
• Contributor Guide followed