Bug#1011646: libthrust: autopkgtest: please be more gentle on ci.d.n infrastructure

[Andreas Beckmann]

Hi Paul,

with the latest tuned autopkgtest versions of src:libthrust and src:cub
having migrated to testing, could you check whether these packages now
only put an "acceptable" load on the CI infrastructure?

(the src:nvidia-cuda-toolkit autopkgtest will be dropped with the next
upload, src:pycuda should have equivalent tests now while requiring no
extraordinary space to unpack :-)

Andreas