🚀 Feature Request

Relevant Package [REQUIRED]

This feature request is for EdgeX services

Description [REQUIRED]

Processor.applyWritableUpdates uses utils.MergeValues to apply updates to the writable portion of the service configuration. However, MergeValues only updates or adds fields but cannot remove keys that no longer exist in the upstream configuration provider. This means if a writable config entry (e.g., an insecure secret) is removed from the config provider, it will remain in the local service configuration.

Describe the solution you'd like

Replace the MergeValues approach with a full reload