Previously all files got downloaded to a hardcoded path, including the
username for the CI machines. Usually, it does not fit the username of a
local development machine, complicating to reproduce bugs.
Introduce Get-(Default)DownloadLocation functions in helpers to
specify the default download location. This helps to run the
provisioning scripts on a local machine.
Change-Id: I761a92bf5e3e774358756a95dddb9a5d6ee54db9
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
b317ad8096