Merge branch 'thesis-mk' into 'develop'

Dockerfile.debug

api/grpc.go

build/cd/deploy.go

cmd/root.go

go.mod

go.sum

http.go

http_test.go

metrics/prometheus.go

northbound/server/core.go

northbound/server/csbi.go

northbound/server/metrics.go

northbound/server/nbi.go

northbound/server/pnd.go

northbound/server/pnd_test.go

nucleus/device.go

nucleus/gnmi_transport.go

nucleus/metrics.go

nucleus/principalNetworkDomain.go

nucleus/principalNetworkDomain_test.go