dns/knot-resolver: fixing rc scripts krescachegc and kresd

• kresd.i lacked activation of defined status_cmd="${name}_status"
• dns/knot-resolver/files/krescachegc.in needed full clean-up:

• daemon didn't start due to missing '-c <resolver_cache>'
• missing 'start', 'stop' and 'status' functionality added

PR: 277540
Reported by: trashcan@ellael.org