autotest/virt-test — pull request #1215 by Xiangmin (2013-12-10 14:44:22+00:00)
Title: unattended_install.cfg: limit disk num to 6 in multi_disk_install when using ahci

An ahci controller can have up to 6 downstream devices,
so need to limit disk num to 6.

Signed-off-by: Xiangmin Han