feat(ci): Update action workflow to elevate permissions required for Cloud NGFW (#64)

Author: horiagunica

.github/actions/terratest/action.yml

@@ -37,6 +37,23 @@ runs:
         workload_identity_provider: ${{ env.WORKLOAD_IDENTITY_PROVIDER }}
         service_account: ${{ env.GCP_SERVICE_ACCOUNT}}
 
+    - name: Set up Cloud SDK
+      uses: "google-github-actions/setup-gcloud@v2"
+      with:
+        version: "469.0.0"
+
+    - name: Elevate permissions
+      shell: bash
+      env:
+        ORG_ID: ${{ env.ORG_ID }}
+      run: |
+        gcloud beta pam grants create \
+          --entitlement=custom-network-security-endpoint-admin-auto \
+          --location=global \
+          --organization="$ORG_ID" \
+          --requested-duration=3600s \
+          --justification="On demand Idempotence on ${{ github.repository }} test for PR - (#${{ github.event.inputs.pr-id }}) ${{ github.event.inputs.pr-title }}"
+
     - name: ${{ inputs.terratest_action }} infrastructure
       env:
         TPATH: ${{ inputs.path }}