make cleanup and pre-creation recurrence period configurable

[matigoal]

What feature do you want to see added?

There are a pull request for have a change in time for deletion Virtual Machine. This pull request add possibility to choose the time value for destroy the virtual machine and this allows to faster cleanup and pre-creating machines.

Upstream changes

Link of the pull request: #352

Are you interested in contributing this feature?

No response

[simonelbaz]

Done with #393