Add e2e logs.

Author: wu-sheng

.github/workflows/e2e.yaml

@@ -63,3 +63,9 @@ jobs:
         uses: apache/skywalking-infra-e2e@7e4b5b68716fdb7b79b21fa8908f9db497e1b115
         with:
           e2e-file: ${{ matrix.case.path }}
+      - uses: actions/upload-artifact@v4
+        if: ${{ failure() }}
+        name: Upload Logs
+        with:
+          name: test-logs-${{ matrix.test.name }}
+          path: "${{ env.SW_INFRA_E2E_LOG_DIR }}"