Order of the class parameters is refactored

Order and intendation of those parameters are changed
to follow Puppet Style Guide recommendation [0].
Moreover, it will allow to an user to find much faster
a variable in a list of variables.

[0]. https://docs.puppetlabs.com/guides/style_guide.html

Change-Id: Ie383c7c042fa8e10631522bcdc3f0755ae8b7ed4

manifests/init.pp

@@ -16,8 +16,8 @@
 class grafyaml (
   $config_dir,
   $git_revision = 'master',
-  $git_source = 'https://git.openstack.org/openstack-infra/grafyaml',
-  $grafana_url = 'http://localhost:8080',
+  $git_source   = 'https://git.openstack.org/openstack-infra/grafyaml',
+  $grafana_url  = 'http://localhost:8080',
 ) {
   include ::pip