Consolidate System of Record Notation Across Integrations

[Kircheneer]

          I think this is functionality we should harmonize across the different integrations. Not to hold this PR up, but we should track this.

Originally posted by @Kircheneer in #575 (comment)

[jdrew82]

The functionality that's mentioned here is to allow tracking of the source of data imported from various SoRs. This was done prior to the Metadata functionality that was added in NB 2.3. Ultimately, I think the Metadata functionality should replace this once the ability to filter objects based upon that Metadata is enabled in core.

[itdependsnetworks]

It would be good to add a flag to add "System or Record" metadata automatically. So if a serial number comes from ServiceNow as an example, it would be great to add that metadata to indicate that.