do not enable plone.allowdiscussion by default

[jensens]

lets do this when plone.app.discussion is installed.
see plone/plone.app.discussion#211
do not merge alone!

[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!

[davisagli]

@jensens I think we need a new branch for Plone 6.0, before this is merged

[jensens]

@jensens I think we need a new branch for Plone 6.0, before this is merged

buildout.coredev 6.0 already points to 3.x branch:

plone.app.contenttypes              = git ${remotes:plone}/plone.app.contenttypes.git pushurl=${remotes:plone_push}/plone.app.contenttypes.git branch=3.x

No idea why meta still tests 6.0

[mauritsvanrees]

No idea why meta still tests 6.0

All packages that are only meant for 6.1, should have this in .meta.toml:

[tox]
constraints_file = "https://dist.plone.org/release/6.1-dev/constraints.txt"

And then rerun plone/meta over it. I pushed a commit with those changes to this PR.
[Edit: and I merged master in here, as there was a conflict.]