Merge branch 'functionality_test' into 'devel'

.gitignore

.gitlab-ci.yml

Makefile

gitlab-ci/functional-api-test.sh

gitlab-ci/functional-test.sh

gitlab-ci/install-dependencies.sh

gitlab-ci/replay_packets.sh

gitlab-ci/verify.sh

test/files/etc/config/ieee1905

test/output/info.data

test/output/link.data

test/output/neighbors.data

test/pcap/autoconfig_search.pcap

test/pcap/higher_layer_query.pcap

test/pcap/higher_layer_response.pcap

test/pcap/link_metric_query.pcap

test/pcap/link_metric_response.pcap

test/pcap/topology_discover.pcap

test/pcap/topology_query.pcap

test/pcap/topology_response.pcap