[EDH-3844] rTime missing from Data Distribution

[elinasirk]

Problem

Metering data DD flow is not working correctly. Default values are not added to Data Distribution.

When reading time is not sent, current timestamp is added as reading time. However in this case this reading time is not added to data distribution. This should not work this way, no matter which way the reading time is added it needs to be included in DD.

Steps to reproduce

Add metering data without reading time (via API)
Check DD - no reading time is included

Expected result

Reading time must always be included in metering data DD. Doesn't matter if it is sent to us or we added it as current timestamp.

Actual Result

Reading time missing from DD if the metering data is not sent with reading time.

Impact (If known)

Open Suppliers do not know which metering data is the latest.