Stop having edxapp: for edxapp:lms edxapp:cms

As we move to deploying cms and lms separately, we don't need a group.
Having the group specified in each lms.conf cms.conf supervisor config
doesn't work on sandboxes, so I just cleaned up everything that uses
them on sandboxes.

Ensure that edxapp.conf isn't still deployed

Add newrelic infrastructure to sandbox(OPS-3153)

Override the Jetty default of 30m to 60m

Helpful if you're using the loadtest drivers

Update sandbox base AMIs.

update some jenkins plugins

added support to override THEMES_VERSION for sandbox creation

Add a Continuous Deployment playbook to run a management command

Remove veda from the sandbox beacuse parts of it are failing on the nightly build.

We removed use of these from GoCD a while ago

I don't believe these are used anywhere in GoCD and will be surprised
if we use them elsewhere.

update ghprb and dependencies

ansible lineinfile parameter fix

update nr display name to instanceid on aws

Neither of these has been touched in a long time

Allow RabbitMQ to be disabled

Switch from ansible npm module to raw npm OPS-3134

Ansible npm module doesn't properly respect package-lock.json in Node 8
See PR #4292

update dsl plugin version for build jenkins

Add futures environment marker to fix Python 3

TE-2565 Improve requirements file management