The mysql_db command from ansible expects to be able to connect to the
`mysql` DB, which prevents changing the MySQL DB for xqueue to a
DB on which we don't have overall administrator privileges.

https://github.com/ansible/ansible/blob/devel/library/database/mysql_db

This is necessary to be able to get several services using the
`/opt/wwc/env.json` & `/opt/wwc/auth.json` files. The configuration
files would get overwitten when this is used by several different
services cohabiting on a single instance

Since xqueue has its own set of dependencies, using a dedicated
virtualenv allows to avoid potential dependencies conflicts when
several services are installed on the same instance.

To be used in conjonction with
https://github.com/antoviaque/xqueue/commit/303601ea9ffcbd30f6bb3e2b9a42d6f85fbcf6b3

This is necessary to be able to get several services using the
`/opt/wwc/env.json` & `/opt/wwc/auth.json` files. The configuration
files would get overwitten when this is used by several different
services cohabiting on a single instance

Handle cases where we need to refresh ruby-build due to new ruby version

initial working version, tested on ubuntu.

remove mongo server from requirements

Add more control over rabbit and worker instance types.

Be able to generate ssh config rules given a cloudformation stack name.

Feanil/provision vpc

In certain states, ruby is installed but the env is not setup so it is importart
to always run the environment update task and the rehash task.

The rbenv install task prompts if the version of ruby is already installed. This
freezes the build so skip it if the version directory already exists.

Also add two more useful plugins.

Update main.yml to fix a typo.

adding iam role association to launch configurations

Adding matching tags for key length fix.

fix typo.

Fix typo in FEEDBACK_SUBMISSION_EMAIL setting name

Script for creating new jenkins server