Add support for pd-balanced disk type

[upodroid]

Release Note Template for Downstream PRs (will be copied)
Fixes: hashicorp/terraform-provider-google#6878

I'll check other resources such as Dataproc and Dataflow and see if any validation is on the diskType fields if they are allowed to be provided.

compute: added support for pd-balanced disk type for `google_compute_instance`

container: added support for pd-balanced disk type for `google_container_node_pool`

[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.

Thanks for your contribution! A human will be with you soon.

@slevenick, 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 ( 6 files changed, 7 insertions(+), 7 deletions(-))
Terraform Beta: Diff ( 6 files changed, 7 insertions(+), 7 deletions(-))

[hanikesn]

Any chance of this getting a review?

[slevenick]

Looks good other than a small typo!

[slevenick]

Any chance of this getting a review?

Yup, sorry I had done a partial review and then forgot about this

[upodroid]

It is ready to go

[modular-magician]

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

Diff report:

Terraform GA: Diff ( 6 files changed, 7 insertions(+), 7 deletions(-))
Terraform Beta: Diff ( 6 files changed, 7 insertions(+), 7 deletions(-))

[slevenick]

Thanks for the addition!