CP-14684 : explicitly allow legacy installs, and ensure arguments are cleared correctly
CP-14684 : explicitly allow legacy installs, and ensure arguments are cleared correctly

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