Update no_proxy & NO_PROXY variables for the user.
Update no_proxy & NO_PROXY variables for the user.

Updating /etc/environment does not stick as Vagrant controls that file
and updates it everytime there is a reload. Leave this change in the
user's config will be more consistent.

Signed-off-by: Ganesh Maharaj Mahalingam <e84b6eb1374b2034268ad16b797fbec9318eafab@intel.com>

ganeshmaharaj/vagrant-devstack