Puppet-lint fixes:

```
manifests/init.pp - WARNING: string containing only a variable on line 50
manifests/init.pp - WARNING: indentation of => is not properly aligned on line 53
manifests/init.pp - WARNING: indentation of => is not properly aligned on line 54
manifests/init.pp - WARNING: unquoted file mode on line 53
manifests/init.pp - WARNING: mode should be represented as a 4 digit octal value or symbolic mode on line 53
```