Fix sample image test
Fix sample image test

Since some time there is jutsone Fingerprint field to fill up
in an image test; unfortunately the serialised test was not
updated.

This was found by inspecting the generated HTML report where
the ColorHist was missing and the Fingerprint was omited because
empty.

vdobler/ht,vdobler/ht,vdobler/ht,vdobler/ht