Implement strategy for Correlation ID

[fishey2]

For inbound request handling we want to be able to keep track of each request in the logs via a Correlation ID, this means that we would need to do the following:

• When a Correlation-Id has not been provided in the headers, we create a new one (UUID) and set the context - add it to the response
• If a Correlation-Id exists, then set it as the current logging context for the request - add it to response

Acceptance Criteria:

Given that the Spring App is running When I call the /message endpoint without a Correlation-Id header Then one is created and returned in the response headers

Given that the Spring App is running When I call the /message endpoint with a Correlation-Id header Then it is returned in the response headers

Given that the Spring App is running When I call the /message endpoint with a Correlation-Id header Then the correlation-id is added as a field in the JSON log output

[fishey2]

Additional:

Remove MDC parameter after request has been released?