Comment 5 for bug 2020753

It seems to be failing for the wrong reason, but it is refusing to deploy from a non-existent channel:
```
$ juju deploy mysql-router --channel nosuchchannel/stable --revision 24
ERROR listing resources for charm "ch:amd64/mysql-router-24": No revision was found in the Store.
ERROR failed to deploy charm "mysql-router"
```

And for a channel that exists but doesn't have any revisions:
```
$ juju deploy mysql-router --channel latest/stable --revision 24
ERROR listing resources for charm "ch:amd64/mysql-router-24": No revision was found in the Store.
ERROR failed to deploy charm "mysql-router"
```

And mysql-router itself doesn't even have resources (that I can find).