Fix quotes in vm-guest-tools script

scripts/chef.bat

@@ -4,4 +4,4 @@ if not exist "C:\Windows\Temp\chef.msi" (
 )
 
 msiexec /qb /i C:\Windows\Temp\chef.msi
-start /wait powershell -Command "Start-Sleep 1" <NUL
+powershell -Command "Start-Sleep 1" <NUL

scripts/vm-guest-tools.bat

@@ -11,7 +11,7 @@ goto :done
 
 if not exist "C:\Windows\Temp\VMWare\setup.exe" (
   powershell -Command "(New-Object System.Net.WebClient).DownloadFile('http://softwareupdate.vmware.com/cds/vmw-desktop/ws/10.0.0/1295980/windows/packages/tools-windows-9.6.0.exe.tar', 'C:\Windows\Temp\vmware-tools.exe.tar')" <NUL
-  cmd /c "C:\Program Files\7-Zip\7z.exe" x C:\Windows\Temp\vmware-tools.exe.tar -oC:\Windows\Temp
+  cmd /c ""C:\Program Files\7-Zip\7z.exe" x C:\Windows\Temp\vmware-tools.exe.tar -oC:\Windows\Temp"
   cmd /c C:\Windows\Temp\tools-windows-9.6.0
   cmd /c ""C:\Program Files\7-Zip\7z.exe" x "C:\Program Files (x86)\VMWare\tools-windows\windows.iso" -oC:\Windows\Temp\VMWare"
   del /F /S /Q "C:\Program Files (x86)\VMWare"
@@ -27,7 +27,7 @@ goto :done
 cmd /c certutil -addstore -f "TrustedPublisher" A:\oracle-cert.cer
 
 mv C:\Users\vagrant\VBoxGuestAdditions.iso C:\Windows\Temp
-cmd /c "C:\Program Files\7-Zip\7z.exe" x C:\Windows\Temp\VBoxGuestAdditions.iso -oC:\Windows\Temp\virtualbox
+cmd /c ""C:\Program Files\7-Zip\7z.exe" x C:\Windows\Temp\VBoxGuestAdditions.iso -oC:\Windows\Temp\virtualbox"
 cmd /c C:\Windows\Temp\virtualbox\VBoxWindowsAdditions.exe /S
 goto :done