autotest/virt-test — pull request #605 by xiaoqing-wei (2013-07-05 09:24:23+00:00)
Title: add commas of qemu cpu flags in cfg, not qemu_vm(issue 604)

otherwise would generate qemu cmd like -cpu SandyBridge,,+sep
This fix is for https://github.com/autotest/virt-test/issues/604

Signed-off-by: Xiaoqing Wei