o snapper config-types
enhance snapper config template which new fields
CHILD_CONFIG=<true | false> default: missing -> means false
PARENT_CONFIG=<parent config name>
o Use the types for distinctable snapshot runs:
disk2disk (1st stage snapshots CHILD_CONFIG='false' or missing
cloning (2st stage snapshots CHILD_CONFIG='true' or missing
o snapper config postfix
to overcome snapper config name clashes, enable dsnap-sync with
selectable postfix (default: .<hostname>)
cloning a "home" config to remote host will not interfere with
a "home" d2d-config on this remote host
o update the snapper template dsnap-sync