Deprecate BBB controlpanel adapter.

[jensens]

Add a deprecation warning to every initialization of all BBB control-panel adapters.

[mister-roboto]

@jensens thanks for creating this Pull Request and helping to improve Plone!

TL;DR: Finish pushing changes, pass all other checks, then paste a comment:

@jenkins-plone-org please run jobs

To ensure that these changes do not break other parts of Plone, the Plone test suite matrix needs to pass, but it takes 30-60 min. Other CI checks are usually much faster and the Plone Jenkins resources are limited, so when done pushing changes and all other checks pass either start all Jenkins PR jobs yourself, or simply add the comment above in this PR to start all the jobs automatically.

Happy hacking!

[jensens]

@jenkins-plone-org please run jobs

[jensens]

Reviving this — it's step 1 in the plan outlined in #1050.

PRs to fix direct getAdapter() callers (step 2) are being prepared:

• plone.restapi: services/users/add.py and services/users/update.py
• Products.CMFPlone: controlpanel/browser/usergroups.py

Once those land, these deprecation warnings will help identify any remaining third-party code using the BBB adapter pattern.

[jensens]

@jenkins-plone-org please run jobs