fix(接口定义): 修复数据库配置最大连接数与超时时间缺少默认值的缺陷

--bug=1017897 --user=王孝刚 【接口测试】环境配置-数据库配置最大连接数与超时时间缺少默认值，建议优化
https://www.tapd.cn/55049933/s/1259992

framework/sdk-parent/frontend/src/model/EnvTestModel.js

@@ -654,8 +654,8 @@ export class DatabaseConfig extends BaseConfig {
     super();
     this.id = undefined;
     this.name = undefined;
-    this.poolMax = undefined;
-    this.timeout = undefined;
+    this.poolMax = 1;
+    this.timeout = 10000;
     this.driver = undefined;
     this.dbUrl = undefined;
     this.username = undefined;