tests: add smartcard-passthrough-unix

Test CCID smartcard passthrough from a unix listen socket.
Use the capabilities of QEMU 2.5.0 which did not support
chardev FD passing and the latest one, which (at the time
of this commit) it does.

Signed-off-by: Ján Tomko <jtomko@redhat.com>

tests/qemuxml2argvdata/smartcard-passthrough-unix.x86_64-2.5.0.args

@@ -0,0 +1,30 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-machine pc-i440fx-2.5,accel=kvm,usb=off,dump-guest-core=off \
+-m 214 \
+-realtime mlock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-device usb-ccid,id=ccid0,bus=usb.0,port=1 \
+-chardev socket,id=charsmartcard0,path=/tmp/smartcard.sock,server,nowait \
+-device ccid-card-passthru,chardev=charsmartcard0,id=smartcard0,bus=ccid0.0 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
+-msg timestamp=on