autotest/virt-test — pull request #1512 by ypu (2014-03-14 07:37:31+00:00)
Title: virttest: Add debug option to ssh and dhclient command

Add debug option to ssh and dhclient command to get more information
to figure out if a test failed is caused by netowrk env problem.
Also let dhclient do not run in background to show the infomrmation.