Hook Rest Service submission data

[jdugh]

Description

Each time the celery task 'service_definition_task' is run, an instance of 'ServiceDefinition' is created. ServiceDefinition calls the 'self._get_data()' def in its __init__, which retrieves the submission data from the database.
Between each attempt of the service_definition_task, the submission data is retrieved.
If between two attempts of the task, the submission is modified, the data sent to the REST service will therefore be different.

Steps to Reproduce

1. Create a REST Hook Service
2. Point to fake URL (who return another HTTP status code than 200) - to enter in the retry process
3. Create a new submission
4. Wait for the first service_definition_task send task to be called
5. Edit this submission (before the next try - in 1 minute the first time ; be fast 😄)
6. Wait the next retry
7. The data sent to the REST service is no longer the same as the first time

Expected behavior

Is it the expected behavior ? I except the expected behavior is the original submission data, no ?

Actual behavior

Data sent to the REST service is the latest version in the database.