Revert "Update sysprep command, remove unattend.xml"

This reverts commit dd992ccb.

README-shutdown_command.md

@@ -9,7 +9,7 @@ Normally we use something like this to shutdown the VM in packer.
 Replace it with
 
 ```json
-   "shutdown_command": "c:/windows/system32/sysprep/sysprep.exe /oobe /generalize /shutdown /mode:vm",
+   "shutdown_command": "c:/windows/system32/sysprep/sysprep.exe /generalize /oobe /quiet /shutdown /unattend:a:/unattend.xml",
 ```
 
-On the first `vagrant up` the box will boot with an out-of-box-experience (OOBE)
+and on the first `vagrant up` the box will boot with an out-of-box-experience (OOBE)

scripts/unattend.xml

+<?xml version="1.0" encoding="utf-8"?>
+<unattend xmlns="urn:schemas-microsoft-com:unattend">
+    <settings pass="generalize">
+        <component name="Microsoft-Windows-Security-SPP" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+            <SkipRearm>0</SkipRearm>
+        </component>
+        <!--
+        <component name="Microsoft-Windows-PnpSysprep" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+            <PersistAllDeviceInstalls>false</PersistAllDeviceInstalls>
+            <DoNotCleanUpNonPresentDevices>false</DoNotCleanUpNonPresentDevices>
+        </component>
+        -->
+    </settings>
+    <settings pass="oobeSystem">
+        <component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+            <OOBE>
+                <HideEULAPage>true</HideEULAPage>
+                <ProtectYourPC>3</ProtectYourPC>
+                <NetworkLocation>Work</NetworkLocation>
+                <HideWirelessSetupInOOBE>true</HideWirelessSetupInOOBE>
+                <SkipUserOOBE>true</SkipUserOOBE>
+                <SkipMachineOOBE>true</SkipMachineOOBE>
+            </OOBE>
+            <AutoLogon>
+                <Password>
+                    <Value>vagrant</Value>
+                    <PlainText>true</PlainText>
+                </Password>
+                <Enabled>true</Enabled>
+                <LogonCount>1</LogonCount>
+                <Username>vagrant</Username>
+            </AutoLogon>
+        </component>
+    </settings>
+    <settings pass="specialize">
+        <component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+            <ComputerName>vagrant-2012</ComputerName>
+            <CopyProfile>false</CopyProfile>
+        </component>
+    </settings>
+</unattend>

windows_2012_r2.json

@@ -23,6 +23,7 @@
         "./scripts/disable-winrm.ps1",
         "./scripts/enable-winrm.ps1",
         "./scripts/microsoft-updates.bat",
+        "./scripts/unattend.xml",
         "./scripts/win-updates.ps1"
       ],
       "vmx_data": {
@@ -54,6 +55,7 @@
         "./scripts/disable-winrm.ps1",
         "./scripts/enable-winrm.ps1",
         "./scripts/microsoft-updates.bat",
+        "./scripts/unattend.xml",
         "./scripts/win-updates.ps1",
         "./scripts/oracle-cert.cer"
       ],