Support development requirements in Vagrant and Docker devstacks

New base AMI

Revert "Remove local version of ansible modules taken from ansible-core"

Set the EDXAPP_IMPORT_EXPORT_BUCKET setting to an empty string

Remove local version of ansible modules taken from ansible-core

Set the EDXAPP_IMPORT_EXPORT_BUCKET setting to an empty string to make the course import/export functionality to use the file system for storage

DEVOPS-6012 which drops the django celery tables
Newer clean 16.04 AMI so that it'll get newer kernel modules.

PLAT-1228 Support bok-choy in edxapp Docker devstack

add automated user rabbitmq

Remove outdated `SUPPORT_URL` setting in `INSIGHTS_CONFIG`

`SUPPORT_URL` was replaced by `SUPPORT_EMAIL`

Skip elb operations in CreateSandbox job with full_edx_installation

[ENT-290] Update default value of the audit modes setting

remove ES variables refactoring

Fixed xqueue template error in debug statements

Stop killing instructor tasks prematurely

(WIP) mroytman/add ssl edxapp es

We've realized that celery workers report their process name differently
on 16.04, so we need to add this additional -a flag to ensure workers
are not killed prematurely.

EDUCATOR-442 Remove Insights feedback email

Remove setting `INSIGHTS_FEEDBACK_EMAIL`, as it was deemed redundant with `INSIGHTS_SUPPORT_EMAIL`

Allow configurable password reset support link.

Allow configurable activation email support link.