Add missing DefaultTarget to Docker exploit

Author: wvu

modules/exploits/linux/local/docker_daemon_privilege_escalation.rb

@@ -13,19 +13,20 @@ class MetasploitModule < Msf::Exploit::Local
 
   def initialize(info={})
     super(update_info(info, {
-      'Name'          => 'Docker Daemon Privilege Escalation',
-      'Description'   => %q{
+      'Name'           => 'Docker Daemon Privilege Escalation',
+      'Description'    => %q{
         This module obtains root privileges from any host account with access to the
         Docker daemon. Usually this includes accounts in the `docker` group.
       },
-      'License'       => MSF_LICENSE,
-      'Author'        => ['forzoni'],
+      'License'        => MSF_LICENSE,
+      'Author'         => ['forzoni'],
       'DisclosureDate' => 'Jun 28 2016',
-      'Platform'      => 'linux',
-      'Arch'          => [ARCH_X86, ARCH_X86_64, ARCH_ARMLE, ARCH_MIPSLE, ARCH_MIPSBE],
-      'Targets'       => [ ['Automatic', {}] ],
+      'Platform'       => 'linux',
+      'Arch'           => [ARCH_X86, ARCH_X86_64, ARCH_ARMLE, ARCH_MIPSLE, ARCH_MIPSBE],
+      'Targets'        => [ ['Automatic', {}] ],
       'DefaultOptions' => { 'PrependFork' => true, 'WfsDelay' => 60 },
-      'SessionTypes'  => ['shell', 'meterpreter']
+      'SessionTypes'   => ['shell', 'meterpreter'],
+      'DefaultTarget'  => 0
       }
     ))
     register_advanced_options([