forgot a line to define service name for centos5

Signed-off-by: Nick Chappell <nick@intronic.org>

Merged from: https://github.com/Icinga/puppet-icinga2/pull/41

refs#7674: https://dev.icinga.org/issues/7674

manifests/params.pp

@@ -243,6 +243,9 @@ class icinga2::params {
     #Icinga 2 server daemon names for Red Had/CentOS systems:
     'CentOS': {
       case $::operatingsystemmajrelease {
+        '5': {
+          $icinga2_server_service_name = 'icinga2'
+        }
         '6': {
           $icinga2_server_service_name = 'icinga2'
         }