Change solaris shut down command to properly shut down [Gh-1506]

CHANGELOG.md

@@ -22,6 +22,7 @@ BUG FIXES:
   - Default VirtualBox VM name now contains the machine name as defined
     in the Vagrantfile, helping differentiate multi-VM. [GH-1281]
   - NFS works properly on CentOS hosts. [GH-1394]
+  - Solaris guests actually shut down properly. [GH-1506]
 
 ## 1.2.4 (July 16, 2013)
 

plugins/guests/solaris/cap/halt.rb

@@ -9,7 +9,8 @@ module VagrantPlugins
           #
           # does not exist in /etc/user_attr. TODO
           begin
-            machine.communicate.execute("#{machine.config.solaris.suexec_cmd} /usr/sbin/poweroff")
+            machine.communicate.execute(
+              "#{machine.config.solaris.suexec_cmd} /usr/sbin/shutdown -y -i5 -g0")
           rescue IOError
             # Ignore, this probably means connection closed because it
             # shut down.