windows: Disable hibernation when booting

This used to be a sysprep but it is better if we disable it right away.
This is not needed for VMs and if this is enabled, the system will
hibernate on an ACPI shutdown event which will make the system
preparation to fail.

image_creator/os_type/windows/__init__.py

@@ -315,12 +315,6 @@ class Windows(OSBase):
 
         self.vm.rexec('netsh firewall set icmpsetting 8')
 
-    @sysprep('Disabling hibernation support')
-    def disable_hibernation(self):
-        """Disable hibernation support and remove the hibernation file"""
-
-        self.vm.rexec(r'powercfg.exe /hibernate off')
-
     @sysprep('Setting the system clock to UTC')
     def utc(self):
         """Set the hardware clock to UTC"""
@@ -590,6 +584,8 @@ class Windows(OSBase):
 
         commands = {}
 
+        # Disable hibernation. This is not needed for a VM
+        commands['hibernate'] = r'powercfg.exe /hibernate off'
         # This script will send a random string to the first serial port. This
         # can be used to determine when the OS has booted.
         commands['BootMonitor'] = "cmd /q /a /c echo " + TOKEN + " > COM1"

image_creator/os_type/windows/powershell.py

@@ -50,6 +50,9 @@ function Cat2Cert
     [System.IO.File]::WriteAllBytes($certFile, $cert.Export("Cert"))
     return $certFile
 }
+
+# This is not needed on VMs
+powercfg.exe /hibernate off
 """
 
 ADD_CERTIFICATE = r"""