in all BORG_* calls remove the REPOSITORY replace as the repository is
set beforehand for the module
Fix the ZABBIX_DUMP_BIN name in settings and check
New module for zabbix settings backup based on zabbix-dump
Move the _BORG_CALL and _BORG_PRUNE base calls to functions.check
instead of each module (they are all the same)
Update Readme file
Update default settings and remove KEEP so the original defaults are
used
