Unknown variable for sys::zsh

```
[puppetserver] Puppet Unknown variable: 'sys::zsh::params::source'. (file: /etc/puppetlabs/code/environments/production/modules/sys/manifests/zsh.pp, line: 8, column: 15)
[puppetserver] Puppet Unknown variable: 'sys::zsh::params::provider'. (file: /etc/puppetlabs/code/environments/production/modules/sys/manifests/zsh.pp, line: 9, column: 15)
```