Allow setting default value on field_domain_access

I have a situation where I'd like some users to be allowed to publish content on a second domain, but have everyone go trough the "main" domain to create content.

Is it something that this patch would help to cover ?

Here's interdiff for 24 to 33, it does look like 24 incorrectly referred to a constant that wasn't defined.

This patch no longer applies

Attached is an updated patch for 2.0.0-beta2

can confirm that @johnjw59 's patch works on 2.0.0-beta2 and the Oct dev version.
It would be ideal to have an option to choose which domain to be the default, though.

Another reroll against 2.0.0-beta3 this time.

Unfortunately the patch contains two update hooks that are now in use by the project, so if you're updating the module and had previously installed this patch you'll need to reset the schema version to 8000 in "key_value" table before updating, patching and running DB updates.

Could we have a MR on 2.0.x please?

MR created.

Could this be a good candidate for beta4?