test: upgrade test to update the toolbox spec
test: upgrade test to update the toolbox spec

The toolbox spec changed from 1.7 to 1.8 due to the removal
of tini from the image. The upgrade test was failing on
k8s 1.18 due to this issue.

Signed-off-by: Travis Nielsen <a8b474fdb3f77f44446f0ab9ddca8147b09b3a9e@redhat.com>

rook/rook,rook/rook,rook/rook,rook/rook,rook/rook