Logging of predeployment check tasks added

* Action logs collection and update are added for several more tasks
* Download release fake is removed (obsolete, for RH)
* Tasks logging is moved to _call_silently()

Implements: blueprint send-anon-usage
Related-Bug: 1384631

Change-Id: Ic37e2efd10409b5fb70e66db846581bfed369c08
Merge "Logging of predeployment check tasks added"