add timeout config in dubbo-samples-nacos-override (#233)

diff --git a/dubbo-samples-nacos/dubbo-samples-nacos-override/case-configuration.yml b/dubbo-samples-nacos/dubbo-samples-nacos-override/case-configuration.yml
index 6c6ddd7..7ee1dc7 100644
--- a/dubbo-samples-nacos/dubbo-samples-nacos-override/case-configuration.yml
+++ b/dubbo-samples-nacos/dubbo-samples-nacos-override/case-configuration.yml
@@ -14,6 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+timeout: 180
+
 services:
   nacos:
     image: nacos/nacos-server:1.4.0