tree 1b4f1be2f8ecd956889119587e9c70c7bb550479
parent 012300da02d9b327633ff73b0152b76483cfe2fe
author You Wang <you@opennetworking.org> 1551295419 -0800
committer You Wang <you@opennetworking.org> 1551396173 +0000

Use exitFromCmd in mininet cli driver

Change-Id: I74f241eee211680d4b13b439ca267c165e517865
(cherry picked from commit a01d7f757dd6e8354d209c4c25cb92d08ca4d43a)