Add legacy long form project to compute firewall policy rule

[trodge]

fixes hashicorp/terraform-provider-google#20725

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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 ( 1 file changed, 6 insertions(+), 6 deletions(-))
google-beta provider: Diff ( 1 file changed, 6 insertions(+), 6 deletions(-))

[modular-magician]

Tests analytics

Total tests: 1073
Passed tests: 1000
Skipped tests: 73
Affected tests: 0

Click here to see the affected service packages

• compute

🟢 All tests passed!

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