Metabase: add database backup test

[YuryHrytsuk]

Decsription

The same way we test simcore database backups, we need to test metabase database backups

[YuryHrytsuk]

Since we are going to deploy metabase on AWS Master and sii4life prod, we need to ensure that backups work properly on AWS Master. This will suffice (no need for extra test)

[YuryHrytsuk]

Blocked until metabase is deployed in AWS Master

[YuryHrytsuk]

Already in AWS Master https://git.speag.com/oSparc/osparc-ops-deployment-configuration/-/merge_requests/1501

[YuryHrytsuk]

No need to add a test aws rds backups. I manually verified that snapshots contain metabase's data. Nothing to do more 🚀