add yum repo code

manifests/main/yumrepo.pp

@@ -7,4 +7,14 @@ class cd_alloy::yumrepo (
 
 ) inherits cd_alloy::params {
 
+	yumrepo { 'grafana':
+        ensure   => 'present',
+        name     => 'grafana',
+        descr    => 'grafana',
+        baseurl  => 'https://packages.grafana.com/oss/rpm',
+        gpgkey   => 'https://packages.grafana.com/gpg.key',
+        enabled  => '1',
+        gpgcheck => '1',
+        target   => '/etc/yum.repo.d/grafana.repo',
+	}
 }