plugins:foreman_docker - Release 0.2.0

Changes to be noted:
* if docker-api is semantically versioned, it should be fine to pin it < 2.0.0 
* same for wicked
* fog dependency is removed since foreman-compute provides it and it's a dependency
* exclude /test since it's irrelevant for installations
you're removing the exclusion, which means you need to package it then, which contradicts your PR comment