Feature: add start time/end time to /api/v2beta/jobs/<unit UUID>/ API endpoint

[scollazo]

Please describe the problem you'd like to be solved

We want to consume the /api/v2beta/jobs/\<unit UUID>/ API in enduro-sdps project, but it lacks information about microservices start time/end time.

Describe the solution you'd like to see implemented

Add start time/end time information to the /api/v2beta/jobs/\<unit UUID>/ API endpoint

Describe alternatives you've considered

Run mysql queries and gather the information from the database

Additional context

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[scollazo]

It would be nice if it could also be available in the microservices list in the dashboard, something like

[replaceafill]

A detailed parameter was added to the api/v2beta/jobs API endpoint. When the parameter is sent in the request the endpoint will return all the task properties returned by the api/v2beta/task endpoint.