wsk api list and aio runtime:route:list display nothing without basepath, default should be to show all

### Expected Behaviour
`wsk api list`
`aio runtime:route:list`
will display the whole lists

### Actual Behaviour
without add basepath, not show the lists

### Reproduce Scenario (including but not limited to)

#### Steps to Reproduce

#### Platform and Version

#### Sample Code that illustrates the problem

#### Logs taken while reproducing problem

从 `wsk api list` 和 `aio runtime:route:list` 命令入口开始，比较提供和不提供 basepath 时的行为。确认未提供 basepath 时两个命令都会显示所有路由，并在可用的情况下通过插件现有的 CLI 测试验证结果。

由索引模型根据 Issue 内容生成。