[3.32][test] `params` for `webapp.post` became required (facultative before)

With CubicWeb 3.32, params for webapp.post became required (see mercurial commit 71b8609bd71e). Previously it was not.

class TestApp(webtest.TestApp):

    def post(
        self,
        route,
        params,
        do_not_grab_the_crsf_token=False,
        do_not_inject_origin=False,
        form_with_csrf_token_url="/login",
        form_number=0,
        **kwargs,
    ):

Edited Jul 27, 2021 by Nicola Spanti

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