container: bump additive_vpc_scope_dns_domain to GA

[DrFaust92]

Release Note Template for Downstream PRs (will be copied)

container: promoted the `additive_vpc_scope_dns_domain` field on the `google_container_cluster` resource to GA

[github-actions]

Hello! I am a robot. Tests will require approval from a repository maintainer to run.

@SarahFrench, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

You can help make sure that review is quick by doing a self-review and by running impacted tests locally.

[SarahFrench]

Thanks for your PR! I'm OOO and will review this on Tuesday, but I'll trigger the tests now

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 3 files changed, 54 insertions(+), 7 deletions(-))
google-beta provider: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))

[SarahFrench]

/gcbrun

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 3 files changed, 54 insertions(+), 7 deletions(-))
google-beta provider: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))

[SarahFrench]

Note to self: As the automated tests on PRs use only the Beta provider, I'm running TestAccContainerCluster_withAdditiveVPC in a build in TC using the GA provider

Edit: that passed ok, I'm now running 4 random tests just to double check