Have a single command to build & deploy

[sbose78]

As a user I would like to have one command which either takes a source code URL or an image URL for deployment.

1. If the source code url is provided, I would expect kodo to build an image using a Dockerfile and deploy it for me
2. If the image url is provider, I would expect kodo to only deploy it for me.

kodo deploy --image=docker.io/library/ruby ...

or

kodo deploy --source=https://github.com/openshift/ruby-hello-world.git ...