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: I51172af3dbc0c7a3923f550cc2a7794eff7cb74d

manifests/client.pp

@@ -1,11 +1,11 @@
 # Class: openafs::client
 
 class openafs::client (
-  $realm,
   $cell,
-  $kdcs = [$::fqdn],
+  $realm,
   $admin_server = [$::fdqn],
-  $cache_size = 500000,
+  $cache_size   = 500000,
+  $kdcs         = [$::fqdn],
 ) {
 
   include ::ntp