Add WLS license to CI about gurobi-optimods HOT 4 OPEN

For the release job which runs many platforms and python versions in parallel, the license needs a baseline limit of at least 12

from gurobi-optimods.

Somwhere in the docs we state that all examples are runnable with the vendored pip license. Can we integrate WLS in the CI and still verify that property?

from gurobi-optimods.

Good point, then we should not apply the WLS license to the doctests, only to a secondary run of the unittests.

I can adjust the cardinality-constrained regression mod to respect that limit in doctests, not sure if the OPF mod examples can do the same.

from gurobi-optimods.

FWIW there is a skipif directive in sphinx-doctest which would allow us to do a run of the doctests with and without a full license. But maybe we should wait on that to enforce small examples as long as we can.

from gurobi-optimods.