Adds support for using apply_requirements in the terragrunt config.
These can be set in three ways:
Using a flag
You can use --apply-requirements in your generate command to set defaults that will apply to all modules
Using a local in the parent config
You can set the local atlantis_apply_requirements in your parent config to override all modules that inherit from that parent. This config is not additive to the --apply-requirements flag, but overrides the array entirely
Using a local in the child config
You can set the local atlantis_apply_requirements in your child config to override the setting for a single module. This config is not additive to the --apply-requirements flag or the local in the parent config, but overrides the array entirely