- fix callback plugin (add a new public methdod)
- ansible_devices fact now contains many more devices
(at least with tinyipa ramdisk and virtual HW),
so by default we now attempt to use only devices that
have non-empty 'host' attribute, and thus are
real block devices on some controller
(not memory-mapped files, loop devices etc)
+ during provisioning, the default target for image
when root device hints are absent will be the first such device
+ during cleaning, only such devices will be attempted to
be cleaned
Change-Id: Id2bfd1ed552ed566b14f6ac5b222c011ff918bee
Closes-Bug: #1718361
0719dafc2f