Problem Description: 

The Analytics team needs a unique system id.

Proposed Solution: 

Add SystemID to the pulpcore plugin api and move galaxy_ng to that pulpcore release.

Reminders:

• Set the affected Component(s): Backend, Infrastructure, Pulp, QE, Security, UI
• Apply labels "crc-automation-hub" and/or "private-automation-hub" to indicate if the issue is for Cloud Automation Hub, Private Automation Hub, or both