Add IpCollection to the Address resource

[onspsk]

Fixes b/464983268

To enable Terraform support for BYOIP IPv4 Usability feature, add ipCollection to
the Address resource and enableEnhancedIpv4Allocation to the PublicDelegatedPrefix resource.

Release Note Template for Downstream PRs

compute: added `ip_collection` field to `google_compute_address` resource

compute: added `enable_enhanced_ipv4_allocation` field to `google_compute_public_delegated_prefix` 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 ( 7 files changed, 166 insertions(+), 10 deletions(-))
google-beta provider: Diff ( 7 files changed, 166 insertions(+), 10 deletions(-))
terraform-google-conversion: Diff ( 5 files changed, 96 insertions(+))
Open in Cloud Shell: Diff ( 4 files changed, 106 insertions(+))

[modular-magician]

Tests analytics

Total tests: 1320
Passed tests: 1233
Skipped tests: 84
Affected tests: 3

Click here to see the affected service packages

• compute

Action taken

Found 3 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccComputeAddress_computeAddressEnhancedByoipExample
• TestAccComputeFutureReservation_futureReservationAggregateReservationExample
• TestAccComputeFutureReservation_sharedFutureReservationExample

Get to know how VCR tests work

[modular-magician]

🔴 Tests failed during RECORDING mode:
TestAccComputeAddress_computeAddressEnhancedByoipExample [Error message] [Debug log]
TestAccComputeFutureReservation_futureReservationAggregateReservationExample [Error message] [Debug log]
TestAccComputeFutureReservation_sharedFutureReservationExample [Error message] [Debug log]

🔴 Errors occurred during RECORDING mode. Please fix them to complete your PR.

View the build log or the debug log for each test

[zli82016]

/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 ( 7 files changed, 166 insertions(+), 10 deletions(-))
google-beta provider: Diff ( 7 files changed, 166 insertions(+), 10 deletions(-))
terraform-google-conversion: Diff ( 5 files changed, 96 insertions(+))
Open in Cloud Shell: Diff ( 4 files changed, 106 insertions(+))

[modular-magician]

Tests analytics

Total tests: 1320
Passed tests: 1233
Skipped tests: 84
Affected tests: 3

Click here to see the affected service packages

• compute

Action taken

Found 3 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccComputeAddress_computeAddressEnhancedByoipExample
• TestAccComputeFutureReservation_futureReservationAggregateReservationExample
• TestAccComputeFutureReservation_sharedFutureReservationExample

Get to know how VCR tests work

[modular-magician]

🔴 Tests failed during RECORDING mode:
TestAccComputeAddress_computeAddressEnhancedByoipExample [Error message] [Debug log]
TestAccComputeFutureReservation_futureReservationAggregateReservationExample [Error message] [Debug log]
TestAccComputeFutureReservation_sharedFutureReservationExample [Error message] [Debug log]

🔴 Errors occurred during RECORDING mode. Please fix them to complete your PR.

View the build log or the debug log for each test

[trodge]

Test fails with

2026-01-07T20:03:08.145Z [WARN]  sdk.helper_resource: Error running Terraform CLI command:
  error=
  | exit status 1
  | 
  | Error: Error creating Address: googleapi: Error 400: Invalid resource usage: 'PublicDelegatedPrefix and address must be in the same project and scope.'., invalidResourceUsage
  | 
  |   with google_compute_address.default,
  |   on terraform_plugin_test.tf line 2, in resource "google_compute_address" "default":
  |    2: resource "google_compute_address" "default" {
  | 

[github-actions]

@trodge This PR has been waiting for review for 3 weekdays. Please take a look! Use the label disable-review-reminders to disable these notifications.