Avocado's fetchasset plugin runs before the actual Avocado job (and
any test). It analyses the test's code looking for occurrences of
"self.fetch_asset()" in the either the actual test or setUp() method.
It's not able to fully analyze all code, though.
The way these tests are written, make the fetchasset plugin blind to
the assets. This adds redundant code, true, but one that doesn't hurt
the test and aids the fetchasset plugin to download or verify the
existence of these assets in advance.
Signed-off-by: Cleber Rosa <crosa@redhat.com>