found kubernetes vaultauth resources never picking up new policies,
because they would infinitely renew their token.
- set default max token length for roles to 1 day
- changed all existing role token_max_ttl to match their token_ttl
- remove token_policies from roles config data, this comes from policies.hcl inputs
- remove policies from ldap groups
- remove backend data from roles, this comes from config.hcl inputs
- migrate from individual terraform files to config-driven terragrunt module structure
- add vault_cluster module with config discovery system
- replace individual .tf files with centralized config.hcl
- restructure auth and secret backends as configurable modules
- move auth roles and secret backends to yaml-based configuration
- convert policies from .hcl to .yaml format, add rules/auth definition
- add pre-commit hooks for yaml formatting and file cleanup
- add terragrunt cache to gitignore
- update makefile with terragrunt commands and format target
