Add DNS_SCOPE_UNSPECIFIED back and fix diffs

[zli82016]

fixes hashicorp/terraform-provider-google#21834

DNS_SCOPE_UNSPECIFIED is removed in PR and caused error when it is specified in the Terraform config. This PR will add it back and suppress the diffs.

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See Write release notes for guidance.

container: re-added `DNS_SCOPE_UNSPECIFIED` value to the `dns_config.cluster_dns_scope` field in `google_container_cluster` resource and suppressed diffs between `DNS_SCOPE_UNSPECIFIED` in config and empty/null in state

[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, 47 insertions(+), 5 deletions(-))
google-beta provider: Diff ( 3 files changed, 47 insertions(+), 5 deletions(-))

[zli82016]

Tested locally for the following cases:
Create clusters in 6.24.

• does not specify the field - diffs
• specifies the unspecified option directly - diffs
• specifies the implicit default of CLUSTER_SCOPE explicitly

Then tested with this PR and there are no diffs for the first two cases.

[modular-magician]

Tests analytics

Total tests: 227
Passed tests: 215
Skipped tests: 11
Affected tests: 1

Click here to see the affected service packages

• container

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccContainerCluster_withDNSConfigWithUnspecifiedScope

Get to know how VCR tests work

[modular-magician]

🟢 Tests passed during RECORDING mode:
TestAccContainerCluster_withDNSConfigWithUnspecifiedScope [Debug log]

🟢 No issues found for passed tests after REPLAYING rerun.

---

🟢 All tests passed!

View the build log or the debug log for each test

[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, 47 insertions(+), 5 deletions(-))
google-beta provider: Diff ( 3 files changed, 47 insertions(+), 5 deletions(-))

[modular-magician]

Tests analytics

Total tests: 227
Passed tests: 216
Skipped tests: 11
Affected tests: 0

Click here to see the affected service packages

• container

🟢 All tests passed!

View the build log

[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, 59 insertions(+), 6 deletions(-))
google-beta provider: Diff ( 3 files changed, 59 insertions(+), 6 deletions(-))

[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, 59 insertions(+), 6 deletions(-))
google-beta provider: Diff ( 3 files changed, 59 insertions(+), 6 deletions(-))

[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, 59 insertions(+), 6 deletions(-))
google-beta provider: Diff ( 3 files changed, 59 insertions(+), 6 deletions(-))

[modular-magician]

Tests analytics

Total tests: 226
Passed tests: 214
Skipped tests: 11
Affected tests: 1

Click here to see the affected service packages

• container

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccContainerCluster_cloudDns_nil_scope

Get to know how VCR tests work

[modular-magician]

Tests analytics

Total tests: 226
Passed tests: 214
Skipped tests: 11
Affected tests: 1

Click here to see the affected service packages

• container

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccContainerCluster_cloudDns_nil_scope

Get to know how VCR tests work

[modular-magician]

Tests analytics

Total tests: 226
Passed tests: 214
Skipped tests: 11
Affected tests: 1

Click here to see the affected service packages

• container

Action taken

Found 1 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccContainerCluster_cloudDns_nil_scope

Get to know how VCR tests work

[modular-magician]

🟢 Tests passed during RECORDING mode:
TestAccContainerCluster_cloudDns_nil_scope [Debug log]

🟢 No issues found for passed tests after REPLAYING rerun.

---

🟢 All tests passed!

View the build log or the debug log for each test

[modular-magician]

🟢 Tests passed during RECORDING mode:
TestAccContainerCluster_cloudDns_nil_scope [Debug log]

🟢 No issues found for passed tests after REPLAYING rerun.

---

🟢 All tests passed!

View the build log or the debug log for each test

[modular-magician]

🟢 Tests passed during RECORDING mode:
TestAccContainerCluster_cloudDns_nil_scope [Debug log]

🟢 No issues found for passed tests after REPLAYING rerun.

---

🟢 All tests passed!

View the build log or the debug log for each test

[zli82016]

Modified the tests.

[rileykarson]

LGTM- edited changelog not slightly to cover the new DSF as well.