Smarter API version handling

Description

As described in https://github.com/fabric8io/fabric8-maven-plugin/issues/1200 the minimal version 1.18 used by d-m-p gets rejected for newer Docker daemons (e.g. those having 1.35).

Actually we are compliant with the newer versions (its a minimal version after all), so I see two solutions:

• If possible, we don’t send an API version. However when we use features which require a minimal version of 1.21 this still will still break.

• We send a test request to the Daemon, and check whether it succeeds. In the return response there’s a header Api-Version: which holds the actual Docker daemon version. So if this test request because of a too low version, we can just pick up that version and use it as minimal version for us.

[rhuss]

@JoshLitt should be fixed now with the next release (see later PR merged)

[dantran]

I just ran into same issue with d-m-p 0.28 to 0.30 running against latest docker windows

How do fix this? my apology for not seeing the obvious in this discussion