Change db-A-001 to db-a-001 and db-B-001 to db-b-001 on all files

Summary:
Domain names and hostnames must be written in lowercase to comply with DNS conventions and naming standards.
This change renames db-A-001 to db-a-001 and db-B-001 to db-b-001 across the repository to ensure consistency and avoid issues related to case sensitivity in configuration management and Salt pillar resolution.

Reviewers: dereckson, Duranzed, philectro

Reviewed By: dereckson, Duranzed

Differential Revision: https://devcentral.nasqueron.org/D3991