backport of commit 45f349d (hashicorp#19911)

Co-authored-by: Kuba Wieczorek <kuba.wieczorek@hashicorp.com>

.github/workflows/test-go.yml

@@ -105,6 +105,7 @@ jobs:
           caCertificate: ${{ steps.vault-auth.outputs.ca_certificate }}
           token: ${{ steps.vault-auth.outputs.token }}
           secrets: |
+            kv/data/github/${{ github.repository }}/datadog-ci DATADOG_API_KEY;
             kv/data/github/${{ github.repository }}/license license_1 | VAULT_LICENSE_CI;
             kv/data/github/${{ github.repository }}/license license_2 | VAULT_LICENSE_2;
             kv/data/github/${{ github.repository }}/hcp-link HCP_API_ADDRESS;
@@ -166,6 +167,21 @@ jobs:
               ${{ inputs.extra-flags }} \
                 \
               ${test_packages[${{ matrix.runner-index }}]}
+      - name: Prepare datadog-ci
+        if: github.repository == 'hashicorp/vault'
+        continue-on-error: true
+        run: |
+          curl -L --fail "https://github.com/DataDog/datadog-ci/releases/latest/download/datadog-ci_linux-x64" --output "/usr/local/bin/datadog-ci"
+          chmod +x /usr/local/bin/datadog-ci
+      - name: Upload test results to DataDog
+        continue-on-error: true
+        env:
+          DD_ENV: ci
+        run: |
+          if [[ ${{ github.repository }} == 'hashicorp/vault' ]]; then
+            export DATADOG_API_KEY=${{ secrets.DATADOG_API_KEY }}
+          fi
+          datadog-ci junit upload --service "$GITHUB_REPOSITORY" test-results/go-test/results.xml
       - name: Archive test results
         uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce
         with: