Replace `DATABASE_OPTIONS` setting

`DATABASE_OPTIONS` was deprecated in Django 1.2 and removed in 1.4.
`OPTIONS` should now be passed as part of `DATABASES`.

Add link to testing checklist to PR template.

Make sure NR and Splunk are available in the rabbit role

LEARNER-812

Better modularization of makefiles

Make the gocd jvm max memory configurable.

timeout crons

We've removed the jenkins job using these.

It was primarily used to track nginx upgrade, but we take those on every
release and we also take security updates automatically, so this isn't
winning us anything but mail (it also doesn't handle multiple ASGs).

splunk-s3-backup-play

fix alton bucket variable

Add new Alton variables 

Help descriptions are in their own files.

Set a cluster name on new rabbit clusters

add monitoring to antivirus scans

This is also click-changeable in the UI, and seems to not impact running
clusters from some testing.
This gives you a better name than i-asdfasdfasdfasdf.rabbit.lol which is
what you get by default on AWS.
This is mostly seen in logs and rabbitmqctl output.

Revert "chmod and chown the edx_ansible_venv_dir to make vagrant provision more reliable"

Install jenkins nginx config to nginx_sites_available_dir

Add check to see if hive metastore is initialized.

Make it possible to run the newrelic play on a box without ec2 access

chmod and chown the edx_ansible_venv_dir to make vagrant provision more reliable

Jibsheet/multiple worker cluster detection