Order of the classes 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: I80d176298cd8897f0d6e8b056823f4ad97fbef44

manifests/client.pp

@@ -1,9 +1,9 @@
 # Class kerberos::client
 
 class kerberos::client (
-  $realm,
-  $kdcs,
   $admin_server,
+  $kdcs,
+  $realm,
 ) {
 
   include ::ntp

manifests/server.pp

@@ -2,10 +2,10 @@
 
 class kerberos::server (
   $realm,
-  $kdcs = [$::fqdn],
   $admin_server = [$::fdqn],
-  $slaves = [],
+  $kdcs         = [$::fqdn],
   $slave        = false,
+  $slaves       = [],
 ) {
 
   include ::haveged