[CA-119968] Reenumerate bus prior to deciding if emulated devices are or are not present, avoiding race
[CA-119968] Reenumerate bus prior to deciding if emulated devices are or are not present, avoiding race

Signed-off-by: Ben Chalmers <b3747009c0bd3b0a8ac423a403e103e776512006@citrix.com>

cheng--zhang/win-installer,cheng--zhang/win-installer,OwenSmith/win-installer,kostaslamda/win-installer,kostaslamda/win-installer,xenserver/win-installer,cheng--zhang/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,cheng--zhang/win-installer,OwenSmith/win-installer,benchalmers/win-installer,OwenSmith/win-installer,benchalmers/win-installer,benchalmers/win-installer,benchalmers/win-installer,xenserver/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,benchalmers/win-installer,kostaslamda/win-installer,xenserver/win-installer,xenserver/win-installer,cheng--zhang/win-installer,xenserver/win-installer