qemu_cpu.cfg: Remove PCLMULQDQ bug from whitelist

The pclmulqdq bug is fixed on qemu.git on commit
56383703c060777fd01aaf8d63d5f46d660e9fb9, so we can stop ignoring the
bug and report as an actual failure.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
qemu_cpu.cfg: Whitelist known (but harmless) RHEL6 SVM CPUID bug

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
qemu.tests.cfg: Fix the usb_type of usb1 device

Signed-off-by: Qingtang Zhou <qzhou@redhat.com>
qemu.test: Update stg_params for (usb_)multi_disk test

Remove all the old style of stg params.

Signed-off-by: Qingtang Zhou <qzhou@redhat.com>
qemu.tests: multi_disk: Put test steps into sub functions

Signed-off-by: Qingtang Zhou <qzhou@redhat.com>
qemu.tests: Add parallel test for multi_disk

Signed-off-by: Qingtang Zhou <qzhou@redhat.com>
qemu.tests: Add config for usb storage parallel test

Signed-off-by: Qingtang Zhou <qzhou@redhat.com>