One provided by super class is overbloated.

This will prevent the global checkConsistency alarm to complaint about those documents

This is simplified version of Computer_updateFromDict, which implements only
what is defined in REST API.

It have to be implemented differently, as bobobase_modification_time does not
reflect the fact that instance is indexed.

Computer might need access to destroyed hosting subscription in order to
update its simulation.

erp5_bearer_token does not store data in ZODB anymore.

instance.getRootSoftwareReleaseUrl returns URL of software release, but ERP5
works on documents.

Start date is used by Slap Tool to technically find the most important delivery.
Stop date is for informational purpose only, and this is informational purpose:
the time difference between request and allocating partition.

It allows interaction to work in correct sequence.