"ddev logs" should work against stopped containers

[rfay]

What happened (or feature request):

Now that we have changed containers not to restart, we need to make ddev logs work against stopped containers. Docker is fine with this, and it's actually quite a lot better for us, but currently ddev refuses to do it and you have to docker ps -a and use docker logs to find out the reason for a failure.

What you expected to happen:

How to reproduce this:

Version: Please include the output of ddev version, docker version and the project's .ddev/config.yaml.

Anything else do we need to know:

Related source links or issues:

Please use a complexity rating of 1-5 (5 is high) for a feature request. (High complexity implies more PR planning)

[rickmanelius]

Related #642 (so that projects can be targetted from anywhere). Otherwise, you would have to be in the working directory anyway.

Good idea. Not sure it's urgent, but certainly a good wishlist item!