commit c2bcb56cd36895de27accd5ff30be8465b012b92
author Arup Mukherjee <arup@google.com> Tue Jun 16 14:57:24 2015 -0700
committer Arup Mukherjee <arup@google.com> Tue Jun 16 14:57:40 2015 -0700
tree 06afee8bc6c51ab515f7eef0af0d112c0015f9a2
parent dfc5a33375710b84c890e70a197e3d3bfdcd4117

services/device/devicex: use sudo+su rather than just sudo -u

When the device manager is being installed in multi-user mode
use sudo+su to switch to the device manager user rather than
sudo -u, because the latter is often set up to require a password
on common GCE and EC2 images, whereas the former does not.

This does not break any jenkins tests, and it appeared not to
break
  v23 go test -v v.io/x/ref/services/device --v23.tests --deviceuser=testdm --appuser=testapp

Change-Id: I50540751292b08344dfcc93958a1d24401446fa0