networkservices: added allow_global_access to google_network_services_gateway

[ashishch432]

Adds the allow_global_access field to the google_network_services_gateway resource.
As noted in GCP Console and observed via testing, this field cannot be updated in-place on the SECURE_WEB_GATEWAY proxy after creation. Thus, it is marked as immutable so Terraform can correctly handle updates by recreating the resource.

networkservices: added `allow_global_access` field to `google_network_services_gateway`

[github-actions]

Googlers: For automatic test runs see go/terraform-auto-test-runs.

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 0dbff63:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	4 files changed, 191 insertions(+)
google-beta provider	View Diff	4 files changed, 191 insertions(+)
terraform-google-conversion	View Diff	5 files changed, 36 insertions(+)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
102	99	2	1

Affected Service Packages

• networkservices

Learn how VCR tests work

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Step 1: Replaying Mode

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

• TestAccNetworkServicesGateway_swpAllowGlobalAccess

View the replaying VCR build log

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Step 2: Recording Mode

Recording Mode	Replaying Rerun	Test Name
✅ Log	✅	TestAccNetworkServicesGateway_swpAllowGlobalAccess

🟢 All tests passed!

View the recording VCR build log or the debug logs folder for detailed results.

@ashishch432, @shuyama1 VCR tests complete for 0dbff63!