Rename spice-usbredir-filter option to spice-usbredir-auto-redirect-filter
Rename spice-usbredir-filter option to spice-usbredir-auto-redirect-filter

The spice-usbredir-filter cmdline option was not chosen well, as it does
not indicate what it filters. Now that we are also getting a filter for
selecting already plugged in devices to redirect when a spice connection gets
established, it needs to be renamed to make its function more clear.

Signed-off-by: Hans de Goede <9fa1be1a5b5729e4c6b404f34c9ce49ff4882fd8@redhat.com>

Fantu/spice-gtk,SPICE/spice-gtk,mathslinux/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,elmarco/spice-gtk,flexVDI/spice-gtk,guodong/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,flexVDI/spice-gtk,fgouget/spice-gtk,SPICE/spice-gtk,elmarco/spice-gtk,Fantu/spice-gtk,mathslinux/spice-gtk,mathslinux/spice-gtk,guodong/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,SPICE/spice-gtk,elmarco/spice-gtk,fgouget/spice-gtk,elmarco/spice-gtk,guodong/spice-gtk,fgouget/spice-gtk,mathslinux/spice-gtk,freedesktop-unofficial-mirror/spice__spice-gtk,Fantu/spice-gtk,Fantu/spice-gtk,guodong/spice-gtk,SPICE/spice-gtk