[now-client] ignores is missing ignores added from .nowignore (#3186)
[now-client] ignores is missing ignores added from .nowignore (#3186)

After upgrading to macOS Catalina I get this error on some now-deploys:

```
> Error! ENOENT: no such file or directory, stat '<file that not exist>'
```

and the file is below a folder that should be ignored by `.nowignore`, think this is due to some fs-bug in my node version, but did also discover that the ignore-array returned from `getNowIgnore` did not include the ignores from my `.nowignore`, but only the default defined in the top of the function.

Is this a bug?
zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli