Rename remote development namespace agent auth mappings table and model

MR: Rename the namespace cluster mapping table (!181926 - merged)

Description

Spin off based on the following comment: #513366 (comment 2317269171)

As part of introducing theorganization_cluster_agent_mappings table, we plan on renaming remote_development_namespace_cluster_agent_mappings to namespace_cluster_agent_mappings as the prefix adds no value and makes things long.

We plan on following the zero downtime rename instructions that will spill over two releases

Acceptance Criteria

• add table reference to TABLES_TO_BE_RENAMED hash (current release)
• add a standard migration to rename the table and pay attention to the important notes section in the doc (next release)
• modify the models to use the new table name (next release)
• add a post migration to remove the view and finalize the rename (next release)
• update the TABLES_TO_BE_RENAMED hash to remove the table reference (next release)

Technical Requirements

Design Requirements

Impact Assessment

User Story