the --config-file global flag was defined but not properly used by most
commands. this fixes the flag to work consistently, allowing config to
be stored separately from the repo.
useful for Kubernetes deployments where config comes from a ConfigMap
and data lives on a PersistentVolume.
changes:
- fsrepo: add InitWithUserConfig/OpenWithUserConfig that respect custom
config paths
- fsrepo: fix InitWithUserConfig to create version/datastore_spec even
when config file already exists (pre-populated from ConfigMap)
- commands: update all commands that open repo to use the new functions
- daemon: add CONFIGURATION FILE MANAGEMENT section to help text
explaining difference between --init-config (one-time copy) and
--config-file (persistent external path)
- init: clarify that default-config template preserves Identity
6df07bd5a6