Updated Vagrant fullstack and shortstack to match the recent refactoring
of rbenv and virtualenv roles
Merge pull request #400 from antoviaque/edxapp-devpi-fix

edxapp-devpi-fix: Add dependency on supervisor & fix venv install
changes to the defaults to make certs work in a single instance
Merge remote-tracking branch 'origin' into jarv/cert-fixes
Merge pull request #398 from antoviaque/supervisor-ora

supervisor-ora: Fix inverted xqueue login/password in ora configuration
Merge pull request #399 from edx/will/vagrant-refactor-updates

Updated Vagrant for refactored roles
Merge pull request #401 from edx/jarv/cert-fixes

Jarv/cert fixes
Fix rds ingress groups.
Merge pull request #402 from edx/feanil/cfn_rds_fix

Fix rds ingress groups.
Update worker server wait condition.
Merge pull request #403 from edx/feanil/cfn_rds_fix

Update worker server wait condition.
supervisor-xserver: Add `XSERVER_LANG` variable to make `LANG` configurable
supervisor-xserver: Extract `xserver_gunicorn_workers` variable to defaults
supervisor-xserver: Move playbooks to supervisorctl and supervisor.conf
supervisor-xserver: Convert `xserver.conf` to supervisor configuration format
supervisor-xserver: Switch from supervisor reloads to rereads

`supervisorctl reload` not only reloads the configuration files, but
also restarts all services, which causes all services to be reloaded
several times, and causes errors when the playbook later attempts to
start the services after changes have been applied.