Update installer to use guestagent 180.
Update installer to use guestagent 180.

kostaslamda/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,OwenSmith/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,OwenSmith/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,xenserver/win-installer,kostaslamda/win-installer,xenserver/win-installer,xenserver/win-installer,xenserver/win-installer,xenserver/win-installer