Make jenkins_analytics install its required dependency

DEVOPS-3940 - add SOCIAL_AUTH_OAUTH_SECRETS

Open Sourcing our csmh migration scripts

Revert "Revert "New payment processor configuration format""

Don't stop and get asked questions while migrating

Additionally, a slow deleting scripts for sites that cannot
use truncate.

Updated links to Devstack and Fullstack documentation.

Update devstack from a nightly DEVOPS-3949

This fixes the uninstall/reinstall oauth-toolkit shenanigans

Ansible playbook to launch an instance for the release-pipeline work.

This reverts commit d5c7e72d
This restores commit 7278bd07

Revert "New payment processor configuration format"

Make basic auth exceptions an overridable list

Add API management settings.

Remove all mention of devpi, which we no longer use

Seems like we stopped using devpi with #971 two years ago.

Add dependency on "common" role to the elasticsearch role.

Update sandbox ami with new one built from scratch

Create Analytics Task Seed Job

Fixes broken sandbox builds

The downloads-distro.mongodb.org URL only has 2.6 packages?

Update mongo 3.0 play to use our two new roles

Use the newest version of the agents

Update nltk URLs

The old ones were returning 301s pointing to the updated URL

The role makes use of some variables from common_vars (notably COMMON_*_DIR), so
it should depend on the "common" role.  With this change applied, it's possible
to run the elasticsearch role using the run_role.yml playbook, which is
sometimes convenient.

This worked at one time, but stopped.  I've updated the URL to be
consistent with their current docs (and what we do in the mongo_3 role).

New payment processor configuration format

* defaults/main.yml: adds analytics schedule variables for configuring the AnalyticsSeedJob, with all analytics tasks enabled by default.
* templates/seed_job_template.xml: use updated analytics seed job config and description
* tasks/main.yml: generates a hashed password for the jenkins user, and adds jenkins-auth and create-seed-job tags.
* README.md: documents seed job parameters and jenkins auth change