error on extraneous/unexpected cli input

[dustymabe]

we should probably error out if we get extra arguments/input on the CLI that we don't expect or understand. One example of this is when I was trying to start the gitlab example but I was doing it wrong:

[vagrant@f24 examples (upstreammaster=)]$ ../kompose --version
kompose version 0.1.1 (5a37bf0)
[vagrant@f24 examples (upstreammaster=)]$ ../kompose up docker-gitlab.yml 
We are going to create Kubernetes deployments and services for your Dockerized application. 
If you need different kind of resources, use the 'kompose convert' and 'kubectl create -f' commands instead. 

INFO[0000] Successfully created service: web            
INFO[0000] Successfully created service: redis          
INFO[0000] Successfully created deployment: web         
INFO[0000] Successfully created deployment: redis       

Your application has been deployed to Kubernetes. You can run 'kubectl get deployment,svc,pods' for details.

So you can see I was trying to run gitlab, but I didn't specify things like I should have: kompose -f docker-gitlab.yml up. This means that it actually ignored the docker-gitlab.yml that I passed on the command line and used the default docker-compose.yml instead and it looks like the application is brought up (if you aren't paying attention too close).

Now if instead it would error out when it detected extraneous input then I would have found out what was wrong sooner than later.

[procrypt]

@dustymabe can I work on it, if no one else working on it.

[sebgoa]

@procrypt just assigned it to you.

[procrypt]

@sebgoa Thanks :)