use wfsdelay consistently

Author: Brent Cook

lib/msf/core/modules/external/shim.rb

@@ -39,7 +39,7 @@ def self.mod_meta_common(mod, meta = {})
   end
 
   def self.mod_meta_exploit(mod, meta = {})
-    meta[:delay]       = mod.meta['delay'] || 5
+    meta[:wfsdelay]    = mod.meta['wfsdelay'] || 5
     meta[:privileged]  = mod.meta['privileged'].inspect
     meta[:platform]    = mod.meta['targets'].map do |t|
       t['platform'].dump

lib/msf/core/modules/external/templates/remote_exploit_cmd_stager.erb

@@ -26,7 +26,7 @@ class MetasploitModule < Msf::Exploit::Remote
           <%= meta[:targets] %>
         ],
       'DefaultTarget'  => 0,
-      'DefaultOptions' => { 'WfsDelay' => <%= meta[:delay] %> }
+      'DefaultOptions' => { 'WfsDelay' => <%= meta[:wfsdelay] %> }
       ))
 
       register_options([