Merge pull request #2845 from edx/jibsheet/new-devstack-master

New base box for devstacks that includes fixes for the chrome depreca…

vagrant/release/devstack/Vagrantfile

@@ -76,7 +76,7 @@ openedx_releases = {
   # },
 }
 openedx_releases.default = {
-  :name => "devstack-nightly-20160125", :file => "20160125-devstack-from-nightly.box",
+  :name => "devstack-periodic-2016-03-08", :file => "devstack-periodic-2016-03-08.box",
 }
 rel = ENV['OPENEDX_RELEASE']