Un-guard node_locations on google_container_node_pool resource

[ewolak-sq]

As far as I can tell from the official documentation, this feature is now GA, so we can use it in the "google" provider.

This is a follow-up to #2320

@rileykarson

Release Note Template for Downstream PRs (will be copied)

* container: added `node_locations` to `google_container_node_pool` and `google_container_cluster.node_pool` (now available in GA)

[modular-magician]

Hello! I am a robot who works on Magic Modules PRs.

I have detected that you are a community contributor, so your PR will be assigned to someone with a commit-bit on this repo for initial review.

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@danawillow, please review this PR or find an appropriate assignee.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 100 insertions(+), 1 deletion(-))
Terraform Beta: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 124 insertions(+), 1 deletion(-))
Terraform Beta: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))

[danawillow]

Looks good! Thanks @ewolak-sq!