Unable to run cron in local

I'm trying to write a chalice app for scheduled events.

```
import logging
from chalice import Chalice
from chalice.app import Cron

app = Chalice(app_name='import_blogs')
# Enable DEBUG logs.
app.log.setLevel(logging.DEBUG)

@app.schedule(Cron('*/2', '*', '*', '*', '?', '*'))
def import_rss(event):
app.log.debug('Inside import_rss')
return {'hello': 'rss'}
```

I expect the log to be printed every two minutes when running `chalice local`. However, there is no output.

Is there a way to simulate Cloudwatch scheduled events in local development, without deploying to lambda?

Start with the chalice local entry point and the @app.schedule(Cron(...)) usage shown in the issue, then trace how scheduled events are handled during local development. Determine whether local execution should simulate CloudWatch scheduled events without deployment; done means an agreed implementation or documented supported workflow, with coverage for the demonstrated cron expression.

Written by the indexing model from the issue text.