new_variant: update the end-to-end test for dedede

dedede's moves the generated blobs to their final
place, so have the end-to-end test place the fake fitimages in the
correct place for to find them. This also
requires an update to new_variant to know where to look for the
fitimages in check_fit_image_files, and that rippled to all of
the reference boards that use fitimages.

TEST=`testdata/ waddldee && echo PASS`

Cq-Depend: chrome-internal:3421249
Change-Id: I0c1517127cea0de0cd8ba81910d27247824ba3c1
Reviewed-by: Paul Fagerburg <>
Tested-by: Paul Fagerburg <>
7 files changed