node: _rrs -> _rdataset, rrset: add_rr -> add_rdata

src/knot/ctl/remote.c

src/knot/dnssec/nsec-chain.c

src/knot/dnssec/nsec3-chain.c

src/knot/dnssec/zone-nsec.c

src/knot/dnssec/zone-sign.c

src/knot/modules/synth_record.c

src/knot/nameserver/chaos.c

src/knot/nameserver/internet.c

src/knot/server/serialization.c

src/knot/server/zone-load.c

src/knot/server/zones.c

src/knot/updates/ddns.c

src/knot/updates/xfr-in.c

src/knot/zone/node.c

src/knot/zone/node.h

src/knot/zone/semantic-check.c

src/knot/zone/zone-contents.c

src/knot/zone/zone-create.c

src/libknot/dnssec/rrset-sign.c

src/libknot/dnssec/sig0.c