Update import of venv-manager to work with plugins

applications/venv-manager/venv-manager/venv-manager.go

controller/interfaces/networkelement/networkElement.go

controller/northbound/server/configurationmanagement.go

controller/nucleus/networkElement.go

controller/nucleus/principalNetworkDomain.go

controller/plugin/shared/grpc.go

controller/plugin/shared/interface.go

dev_env_data/sdn/basic_two_aristas.json

plugin-registry/main.go

plugins/examples/arista2/cmd/main.go

plugins/examples/arista2/generated/generated.go

plugins/examples/arista2/generated/yang.go

plugins/examples/arista2/plugin.yaml

plugins/sdk/deviceModel.go