Updated specgen tool to use a go module and added get service logs api call
Updated the specgen tool so it uses the newer go modules instead of godep. I also updated the docker version imported to the latest 19.03.13.
This was tested on a fresh install of go on a new machine. All you have to do to update the models is install go, update the docker repo which is imported using go get -u github.com/docker/docker@
I have also added a call to the get service logs endpoint. To do this I had to add a model which was the reason for updating the go specgen program.
This pull request can be closed when @589 is in. The important backend changes were done in https://github.com/dotnet/Docker.DotNet/pull/480