[pyramid] set waitress url_scheme to https when base-url scheme is https See https://docs.pylonsproject.org/projects/waitress/en/latest/#using-behind-a-reverse-proxy Since we do not configure trusted_proxy waitress ignore X-Forwarded-Proto header and may generate http urls (pyramid request.url) when the instance is behind a https reverse proxy. This cause cubicweb-signredrequest to not work with since it rely on the url (including scheme). Set url_scheme to 'https' when CubicWeb base-url scheme is https as a workaround.

Release notes
-------------

.. toctree::
    :maxdepth: 1

    3.25
    3.24
    3.23
    3.22
    3.21
    3.20
    3.19
    3.18
    3.17
    3.16
    3.15
    3.14