Gitlab: Make test.py stage only depend on binman et al testsuite

Gitlab: Make test.py stage only depend on binman et al testsuite

Our Gitlab pipeline is currently broken up in to several stages. This
was done with the thought process of "we should test tools and if
they're good test emulated targets and if they're good test real
hardware and if they're good test the world". However, in terms of that
first stage it only really matters that binman, et al are still
functional. And for a few years now Gitlab has had a "needs" keyword
that lets you refine pipeline dependencies. Use this to perform the
minor optimization of having test.py only require that tool testing job.
This will become more useful later when we add long running testsuites
that we do not want to block later jobs.

Signed-off-by: Tom Rini <trini@konsulko.com>