URL repository for CentOS 7 is not found

[yhojann-cl]

When try install grafana using package method on CentOS 7 like as:

class { 'grafana':
    install_method  => 'package',
}

Says:

Error: Execution of '/usr/bin/rpm -i https://dl.grafana.com/oss/release/grafana-installed-1.x86_64.rpm' returned 1: curl: (22) The requested URL returned error: 404 Not Found

In the official grafana page https://grafana.com/grafana/download?platform=linux the url for download is https://dl.grafana.com/oss/release/grafana-7.3.6-1.x86_64.rpm

But in install.pp says:

/(RedHat|Amazon|Suse)/ => "${base_url}/grafana-${grafana::version}-${grafana::rpm_iteration}.x86_64.rpm",

grafana::version is empty when use settings by default like as the example in the official module page https://forge.puppet.com/modules/puppet/grafana

Solve adding the specific version, but it is not documented:

class { 'grafana':
    install_method  => 'package',
    version => '7.3.6',
}