test: create pipeline to run scale test (#999)

# Description

* Create a new GitHub Workflow to run scale test. 
* The new workflow can be executed manually or reused by other workflow.

## Related Issue

If this pull request is related to any issue, please mention it here.
Additionally, make sure that the issue is assigned to you before
submitting this pull request.

## Checklist

- [ ] I have read the [contributing
documentation](https://retina.sh/docs/contributing).
- [ ] I signed and signed-off the commits (`git commit -S -s ...`). See
[this
documentation](https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification)
on signing commits.
- [ ] I have correctly attributed the author(s) of the code.
- [ ] I have tested the changes locally.
- [ ] I have followed the project's style guidelines.
- [ ] I have updated the documentation, if necessary.
- [ ] I have added tests, if applicable.

## Screenshots (if applicable) or Testing Completed

Please add any relevant screenshots or GIFs to showcase the changes
made.

## Additional Notes

Add any additional notes or context about the pull request here.

---

Please refer to the [CONTRIBUTING.md](../CONTRIBUTING.md) file for more
information on how to contribute to this project.

Signed-off-by: Alex Castilio dos Santos <alexsantos@microsoft.com>

.github/workflows/scale-test.yaml

@@ -0,0 +1,132 @@
+name: Scale Test
+
+on:
+  workflow_dispatch:
+    inputs:
+      resource_group:
+        description: "Azure Resource Group"
+        required: true
+        type: string
+      cluster_name:
+        description: "AKS Cluster Name"
+        required: true
+        type: string
+      location:
+        description: "Azure Location"
+        type: string
+        default: ${{ vars.AZURE_LOCATION }}
+      num_deployments:
+        description: "Number of Traffic Deployments"
+        default: 1000
+        type: number
+      num_replicas:
+        description: "Number of Traffic Replicas per Deployment"
+        default: 40
+        type: number
+      num_netpol: 
+        description: "Number of Network Policies"
+        default: 1000
+        type: number
+      num_unique_labels_per_pod: 
+        description: "Number of Unique Labels per Pod"
+        default: 2
+        type: number
+      num_unique_labels_per_deployment:
+        description: "Number of Unique Labels per Deployment"
+        default: 2
+        type: number
+      num_shared_labels_per_pod:
+        description: "Number of Shared Labels per Pod"
+        default: 3
+        type: number
+      delete_labels: 
+        description: "Delete Labels"
+        default: true
+        type: boolean
+
+  workflow_call:
+    inputs:
+      resource_group:
+        description: "Azure Resource Group"
+        required: true
+        type: string
+      cluster_name:
+        description: "AKS Cluster Name"
+        required: true
+        type: string
+      location:
+        description: "Azure Location"
+        type: string
+        default: ${{ vars.AZURE_LOCATION }}
+      num_deployments:
+        description: "Number of Traffic Deployments"
+        default: 1000
+        type: number
+      num_replicas:
+        description: "Number of Traffic Replicas per Deployment"
+        default: 40
+        type: number
+      num_netpol: 
+        description: "Number of Network Policies"
+        default: 1000
+        type: number
+      num_unique_labels_per_pod: 
+        description: "Number of Unique Labels per Pod"
+        default: 2
+        type: number
+      num_unique_labels_per_deployment:
+        description: "Number of Unique Labels per Deployment"
+        default: 2
+        type: number
+      num_shared_labels_per_pod:
+        description: "Number of Shared Labels per Pod"
+        default: 3
+        type: number
+      delete_labels: 
+        description: "Delete Labels"
+        default: true
+        type: boolean
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  scale-test:
+    name: Scale Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+      - run: go version
+
+      - name: Az CLI login
+        uses: azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION }}
+
+      - name: Run Scale Test
+        env:
+          AZURE_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION }}
+          AZURE_LOCATION: ${{ input.location }}
+          AZURE_RESOURCE_GROUP: ${{ inputs.resource_group }}
+          CLUSTER_NAME: ${{ inputs.cluster_name }}
+          NUM_DEPLOYMENTS: ${{ inputs.num_deployments }}
+          NUM_REPLICAS: ${{ inputs.num_replicas }}
+          NUM_NETPOLS: ${{ inputs.num_netpol }}
+          NUM_UNIQUE_LABELS_PER_POD: ${{ inputs.num_unique_labels_per_pod }}
+          NUM_SHARED_LABELS_PER_POD: ${{ inputs.num_shared_labels_per_pod }}
+          NUM_UNIQUE_LABELS_PER_DEPLOYMENT: ${{ inputs.num_unique_labels_per_deployment }}
+          DELETE_LABELS: ${{ inputs.delete_labels }}
+        shell: bash
+        run: |
+          set -euo pipefail
+          go test -v ./test/e2e/. -timeout 300m -tags=scale -count=1  -args -image-tag=$(make version) -image-registry=${{vars.ACR_NAME}} -image-namespace=${{github.repository}}