In SWATCH-3792, we created the swatch-utilization skeleton with some basic functionality only.
After SWATCH-3789, we can now properly configure the utilization summary consumer to consule objects of UtilizationSummary.

Acceptance Criteria

• Use the UtilizationSummary model created in SWATCH-3789
• Validate the payload to ensure we're sending all the required fields (orgID, productId, metricId, for non payg products. For payg products, also the billing_account_id). Log a warning when we receive a message with a wrong productId or metricId.
• Configure/Add the utilization summary consumer to listen these messages.
• All "TODO: ... SWATCH-4005" comments that were committed (SWATCH-4001) are handled and removed.