Fetcher test: fix for non-ostree build
Fetcher test: fix for non-ostree build

Signed-off-by: Eugene Smirnov <a16d8468c5d1db13e92eb74ab4de95e1b7a8acf9@here.com>

advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/sota_client_cpp,advancedtelematic/sota_client_cpp,advancedtelematic/aktualizr