Merge branch 'istaester/update-linter' into 'develop'

.gitignore

api/api_test.go

api/initialise_test.go

build/ci/.code-quality-ci.yml

build/ci/.golangci-config/.golangci.yml

controller.go

http_test.go

northbound/server/pnd.go

nucleus/change.go

nucleus/gnmi_transport.go

nucleus/principalNetworkDomain.go

nucleus/principalNetworkDomain_test.go

nucleus/southbound_test.go

nucleus/transport.go

nucleus/util/path/traverse.go