Symbolic links are now synchronized verbatim (i.e. the links themselves,
not their destinations) to allow for restoring our pattern of linking to
the latest backup file.
In addition, the destination remote and path can now be configured
individually in drop-in files, but still default to the encrypted
remote.
This commit adds a new systemd service, `rclone-sync@.service`,
templated against the absolute path of a directory to keep in sync with
a (presumably) remote store.
Support for Backblaze B2 endpoints has been set up by default, but the
specific remote type can be configured via the `RCLONE_REMOTE_TYPE` host
variable. In addition, a default-passthrough remote that encrypts data
against a static password and salt has been defined under the `crypt`
name, and can also be used as the `RCLONE_DEST` of choice.
We no longer copy service directories into `/etc/coreos-home-server` if
these have not had their respective `spec.bu` files included; these
directories are not needed in these cases, and would be erroneously
considered as eligible in subsequent `coreos-home-server-update`
invocations.
This commit contains a fairly large diff for a fairly small change:
moving the `config/common` directory to `host/base` to better reflect
its intended use, and promoting `config/service` to the root directory.
These changes unlock some improvements in `coreos-home-server-update`
processes, which will (assuming `/etc/coreos-home-server/base` exists)
keep host-wide systemd services in sync in addition to service-specific
ones.
Changes have been make to the `Makefile` and a few other places where
`config/common` was referenced, but most of this work is renames that
are not intended to break compatibility with new or running servers.
