Add gate label

[mnasiadka]

If a project approver adds a ,,gate'' label to the PR - Zuul will gate it and merge it.

[gemini-code-assist]

Code Review

This pull request modifies terraform/github/repositories.tf to rename an existing label resource to gate_label and re-add the workflows_label resource. However, the gate_label resource still uses the name "workflows", which will cause a conflict since both resources would manage the same GitHub label. The reviewer correctly pointed out this issue and suggested changing the name of gate_label to "gate".

Important

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[stackhpc-ci]

Terraform Format and Style 🖌success

Terraform Initialization ⚙️success

Terraform Validation 🤖success

Validation Output

Success! The configuration is valid.

Terraform Plan 📖success

Show Plan

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Pusher: @mnasiadka, Action: pull_request, Working Directory: ``, Workflow: Terraform GitHub