Add ulimit max-open-files param to puppet-hound

The upstream hound server is showing issues on the log about
hitting max opened files, currently on OS default of 1024
files.
This change allows setting the ulimit for open max files on the
init script, defaulting to 2048.

Change-Id: I283105dc0229e1e3f9ab56f0c8c3368581370d10

manifests/init.pp

@@ -7,6 +7,7 @@ class hound (
   $manage_config = true,
   $serveradmin   = "webmaster@${::fqdn}",
   $vhost_name    = $::fqdn,
+  $ulimit_max_open_files = 2048,
 ) {
 
   package { 'golang':
@@ -83,13 +84,13 @@ class hound (
   }
 
   file { '/etc/init.d/hound':
-    ensure => file,
-    owner  => root,
-    group  => root,
-    mode   => '0755',
-    source => 'puppet:///modules/hound/hound.init',
-    notify => Service['hound'],
-    before => Service['hound'],
+    ensure  => file,
+    owner   => root,
+    group   => root,
+    mode    => '0755',
+    content => template('hound/hound.init.erb'),
+    notify  => Service['hound'],
+    before  => Service['hound'],
   }
 
   include ::httpd

templates/hound.init.erb

@@ -24,6 +24,7 @@ PID=/var/run/${NAME}.pid
 
 start () {
     echo -n "Start $NAME"
+    ulimit -n <%= @ulimit_max_open_files %>
     $SSD --start --pidfile $PID --make-pidfile -u $USER -g $GROUP \
         -d $HOUND_HOME --background \
         --startas /bin/bash -- -c "exec $CMD_DIR/$CMD >>$LOG_FILE 2>&1"