Review/update examples/docs to source modules from the registry

[ketzacoatl]

If we have an example like:

module "ebs-backup-policy" {
  source = "github.com/fpco/terraform-aws-foundation//modules/dlm-lifecycle-policy"
  ...

We would want that updated to the following:

module "ebs-backup-policy" {
  source      = "fpco/foundation/aws//modules/dlm-lifecycle-policy"
  version     = "x.y.z"
  ...
  ...

Requirements

• Review all docs and examples (eg git grep ...) for source URLs that use the github module format.
• All occurrences have be updated as shown above (or reviewed and excused for some sensible/legit reason).