Blank line between dictionary entries are removed

yapf 0.32.0

### Input
```python3
apache_license_definitions = {
'License':
'the terms and conditions for use, reproduction and distribution',

'Licensor':
'the copyright owner or entity authorized by the copyright owner',
}
```
Note the single blank line before the `'Licensor'`.

### Formatted result with `yapf --no-local-style`
``` python3
apache_license_definitions = {
'License':
'the terms and conditions for use, reproduction and distribution',
'Licensor':
'the copyright owner or entity authorized by the copyright owner',
}
```

### Expected
No changes with input file