promote netapp regional flex storage pool and volume to GA

[Mehul3217]

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See Write release notes for guidance.

netapp: promoted `zone` and `replica_zone` fields to GA in `google_netapp_storage_pool` resource

netapp: promoted `zone` and `replica_zone` fields to GA in `google_netapp_volume` resource

[github-actions]

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[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 ( 5 files changed, 219 insertions(+), 7 deletions(-))
google-beta provider: Diff ( 3 files changed, 5 insertions(+), 15 deletions(-))

[modular-magician]

Tests analytics

Total tests: 20
Passed tests: 20
Skipped tests: 0
Affected tests: 0

Click here to see the affected service packages

• netapp

#### Non-exercised tests

🔴 Tests were added that are GA-only additions and require manual runs:

• TestAccNetappStoragePool_FlexRegionalStoragePoolCreateExample_update
  🟢 All tests passed!

View the build log

[zli82016]

TestAccNetappStoragePool_FlexRegionalStoragePoolCreateExample_update passed in Teamcity

[zli82016]

LGTM