RHBZ#2063722: don't set O_RDWR/O_WRONLY as flags for FUSE_OPENDIR
RHBZ#2063722: don't set O_RDWR/O_WRONLY as flags for FUSE_OPENDIR

Flags O_RDWR and O_WRONLY along with O_DIRECTORY cause EISDIR on the
host. Actually, there is no need to involve write access when
performing Create/Open of a directory. So, pass just O_RDONLY.

Signed-off-by: Viktor Prutyanov <86faeb3e05561b856666236e198c27e698275e82@daynix.com>

YanVugenfirer/kvm-guest-drivers-windows,YanVugenfirer/kvm-guest-drivers-windows,YanVugenfirer/kvm-guest-drivers-windows,daynix/kvm-guest-drivers-windows,daynix/kvm-guest-drivers-windows,daynix/kvm-guest-drivers-windows,vrozenfe/kvm-guest-drivers-windows,virtio-win/kvm-guest-drivers-windows,vrozenfe/kvm-guest-drivers-windows,daynix/kvm-guest-drivers-windows,virtio-win/kvm-guest-drivers-windows,virtio-win/kvm-guest-drivers-windows,YanVugenfirer/kvm-guest-drivers-windows,vrozenfe/kvm-guest-drivers-windows,YanVugenfirer/kvm-guest-drivers-windows,vrozenfe/kvm-guest-drivers-windows,virtio-win/kvm-guest-drivers-windows,virtio-win/kvm-guest-drivers-windows,vrozenfe/kvm-guest-drivers-windows,daynix/kvm-guest-drivers-windows