Can't publish to a self-hosted/enterprise GitLab instance

[alaw-viator]

Summary

The GitLab domain in the Maven config is fixed to gitlab.com and can't be configured for self-hosted e.g. gitlab.companyname.com

Details

Attempting to publish to a self-hosted instance will result in a somewhat misleading 401 response due to the domain being incorrect.

Expected result

It should be possible to publish to all types of GitLab instances.

Current state

Only gitlab.com is supported

Possible Fix

Add an additional domain property which can be optionally set to configure this to be custom if needed/