[MRG+2] use manylinux dev wheels for numpy / scipy (#8536)

* MAINT: use manylinux dev wheels for numpy / scipy

Use daily manylinux wheels for numpy and scipy, instead of
soon-to-be-discontinued per-commit Precise wheels.

* BF: add back ATLAS install for ubuntu build entry

scikit-learn can link against BLAS libraries still at the same location
as they were duing numpy build.