Feature request:Rollback command

>**Note**: If your feature-request is regarding the AWS Amplify Console service, please log it in the
[official AWS Amplify Console forum](https://forums.aws.amazon.com/forum.jspa?forumID=314&start=0)

**Is your feature request related to a problem? Please describe.**
No. It's enhancement.

**Describe the solution you'd like**
I would like to rollback published version like following

```
$ amplify env prod rollback
$ select date or version?
> 2019-05-11
2019-05-10
2019-05-09
```

**Describe alternatives you've considered**
Is it possible with current architecture??

**Additional context**
Add any other context or screenshots about the feature request here.