autotest/virt-test — pull request #931 by ypu (2013-10-15 07:17:20+00:00)
Title: virttest: Add nfs set up and clean up code in env_process

Add some nfs setup and cleanup related code in env_process.py to
let user can easily run cases with nfs by update cfg files. Also
update the nfs useage comments in base.cfg

Signed-off-by: Yiqiao Pu