tests: Drop qemuxml2argv- prefix for qemuxml2argv test cases

Similarly to the previous commit, rename .args files.

The files were renamed using the following commands. From
qemuxml2argvdata:

  for i in qemuxml2argv-*.args; do mv $i ${i#qemuxml2argv-}; done

and then (to fix broken symlinks) from qemuxml2argvdata and
qemuxml2xmloutdata:

  for i in $(find . -xtype l); do \
      ln -sf $(readlink $i | sed 's/qemuxml2argv-//') $i;
  done

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>

tests/qemuxml2argvdata/luks-disks.args

@@ -0,0 +1,38 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-x86_64 \
+-name encryptdisk \
+-S \
+-object secret,id=masterKey0,format=raw,\
+file=/tmp/lib/domain--1-encryptdisk/master-key.aes \
+-M pc-i440fx-2.1 \
+-m 1024 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 496898a6-e6ff-f7c8-5dc2-3cf410945ee9 \
+-nographic \
+-nodefaults \
+-chardev socket,id=charmonitor,\
+path=/tmp/lib/domain--1-encryptdisk/monitor.sock,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-usb \
+-object secret,id=virtio-disk0-luks-secret0,\
+data=9eao5F8qtkGt+seB1HYivWIxbtwUu6MQtg1zpj/oDtUsPr1q8wBYM91uEHCn6j/1,\
+keyid=masterKey0,iv=AAECAwQFBgcICQoLDA0ODw==,format=base64 \
+-drive file=/storage/guest_disks/encryptdisk,\
+key-secret=virtio-disk0-luks-secret0,format=luks,if=none,id=drive-virtio-disk0 \
+-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,\
+id=virtio-disk0 \
+-object secret,id=virtio-disk1-luks-secret0,\
+data=9eao5F8qtkGt+seB1HYivWIxbtwUu6MQtg1zpj/oDtUsPr1q8wBYM91uEHCn6j/1,\
+keyid=masterKey0,iv=AAECAwQFBgcICQoLDA0ODw==,format=base64 \
+-drive file=/storage/guest_disks/encryptdisk2,\
+key-secret=virtio-disk1-luks-secret0,format=luks,if=none,id=drive-virtio-disk1 \
+-device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,\
+id=virtio-disk1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3