Enable the Container Registry Metadata Database by Default

Summary

⚠️ This is a breaking change ⚠️

We should connect to the metadata database for the container registry by default.

The container registry team is planning on moving to enabling the metadata database by default for %19.0, and the database and connection info is going to be preconfigured in Create a Default Database for the Container Reg... (#8818 - closed) • João Alexandre Cunha • 18.3.

Proposal

We should add a deprecation notice to Omnibus ASAP notifying the breaking change in 19.0.

In 19.0, we enable it by default.

References

See: Include a Default Database for the Container Re... (gitlab#480742 - closed) • Hayley Swimelar • 17.8 • At risk and #8818 (closed) specifically, and Release container registry with metadata databa... (&5521) • Jaime Martinez, Hayley Swimelar+ • On track generally

Edited by João Alexandre Cunha