Don't set empty arrays for subscribers/handlers

 - empty array for check-handler avoids sensu-server to use default
   handler
 - I don't want to set default handler on all puppet checks

lib/puppet/provider/sensu_check/json.rb

@@ -27,11 +27,11 @@ def flush
   def create
     conf['checks'] = {}
     conf['checks'][resource[:name]] = {}
-    self.handlers = resource[:handlers]
     self.command = resource[:command]
     self.interval = resource[:interval]
-    self.subscribers = resource[:subscribers]
     # Optional arguments
+    self.handlers = resource[:handlers] unless resource[:handlers].nil?
+    self.subscribers = resource[:subscribers] unless resource[:subscribers].nil?
     self.type = resource[:type] unless resource[:type].nil?
     self.standalone = resource[:standalone] unless resource[:standalone].nil?
     self.high_flap_threshold = resource[:high_flap_threshold] unless resource[:high_flap_threshold].nil?
@@ -83,7 +83,7 @@ def interval=(value)
   end
 
   def handlers
-    conf['checks'][resource[:name]]['handlers'] || []
+    conf['checks'][resource[:name]]['handlers']
   end
 
   def handlers=(value)
@@ -99,7 +99,7 @@ def command=(value)
   end
 
   def subscribers
-    conf['checks'][resource[:name]]['subscribers'] || []
+    conf['checks'][resource[:name]]['subscribers']
   end
 
   def subscribers=(value)

manifests/check.pp

@@ -9,10 +9,10 @@
   $command,
   $ensure               = 'present',
   $type                 = undef,
-  $handlers             = [],
+  $handlers             = undef,
   $standalone           = true,
   $interval             = '60',
-  $subscribers          = [],
+  $subscribers          = undef,
   $low_flap_threshold   = undef,
   $high_flap_threshold  = undef,
   $custom               = undef,