BB-1372: Add switch to enable/disable data gathering from ec2 instances WIP

Description

This is needed in some deployments were S3 is being used for file
storage but the appserver is in another cloud provider, such as
OpenStack.

This issues started happening after the `ec2_facts` role was replaced with
the new version `ec2_metadata_facts` that fails when the server is not
on AWS, unlike its older counterpart.

*This keeps the same behaviour as before, but allows disabling fact gathering.*

Configuration Pull Request

Make sure that the following steps are done before merging:

  • [ ] A DevOps team member has approved the PR if it is code shared across multiple services and you don't own all of the services.

  • [ ] Are you adding any new default values that need to be overridden when this change goes live? If so:

  • [ ] Update the appropriate internal repo (be sure to update for all our environments)

  • [ ] If you are updating a secure value rather than an internal one, file a DEVOPS ticket with details.

  • [ ] Add an entry to the CHANGELOG.

  • [ ] If you are making a complicated change, have you performed the proper testing specified on the [Ops Ansible Testing Checklist](https://openedx.atlassian.net/wiki/display/EdxOps/Ops+Ansible+Testing+Checklist)? Adding a new variable does not require the full list (although testing on a sandbox is a great idea to ensure it links with your downstream code changes).

  • [ ] Think about how this change will affect Open edX operators. Have you updated the wiki page for the next Open edX release?

Status

Assignee

Unassigned

Reporter

Open Source Pull Request Bot

Contributor Name

Giovanni Cimolin da Silva

Repo

edx/configuration

Customer

Epic Link

None

OSCM Assignee

None

Priority

Unset
Configure