Revert "Merge pull request #759 from edx/jarv/change-devstack-to-release"

This reverts commit 45716d51, reversing
changes made to 8463b336.

playbooks/vagrant-devstack.yml

@@ -7,7 +7,6 @@
     openid_workaround: True
     devstack: True
     edx_platform_version: 'master'
-    configuration_version: 'release'
     mongo_enable_journal: False
     EDXAPP_NO_PREREQ_INSTALL: 0
   vars_files:

vagrant/release/devstack/Vagrantfile

@@ -14,7 +14,7 @@ cd /edx/app/edx_ansible/edx_ansible/playbooks
 # The vagrant-devstack.yml playbook will also do this, but only
 # after loading the playbooks into memory.  If these are out of date,
 # this can cause problems (e.g. looking for templates that no longer exist).
-/edx/bin/update configuration release
+/edx/bin/update configuration master
 
 ansible-playbook -i localhost, -c local vagrant-devstack.yml
 SCRIPT