dpdk: move RSS configuration into port configuration #370

Job	Run time
check / clang-checks	1m 11s
check / editor-config	9s
build-os-matrix	4s
make-tests (oraclelinux:10) / tests	1m 46s
rpm-build (oraclelinux:10) / rpm-build	6m 7s
build (oraclelinux:10) / build	2m 3s
ipfix-elements-check / ipfix-elements-checks	20s
rpm-install (oraclelinux:10) / rpm-install	54s
	12m 34s

Provide feedback