narval #2550354 Elastic cloud-provided narval bot infrastructure [open]

Add a manager allowing to dynamically create an destroy computation resources to run narval bots as cloud-provided instances (OpenStack / AWS).

The idea is to add a looping task (and have the configuration system) to start new apycot bot instances in a cloud when there are more pending tasks, and to destroy them when there is nothing to do.

This ticket require that several narval bots can be started and consumers for a singe narval cubicweb instance (ie. ticket #2550329)

done in<not specified>
closed by<not specified>