Remove reference to specific benchmark version

We support multiple versions of the CIS benchmark

Add kubernetes 1.8 support

Dockerfile fix to copy all the cfg files

Client server error message on 1.6

This functionality is fulfilled by getKubeVersion.

Support multiple kubernetes version

Kubernetes versions.

The server version is used to load the correct benchmark check
to run against the Kubernetes cluster.

Add tests for #50

Fixed issue admission control showing wrong status

Update README for auto-detection of executables and config files

Auto-detect executables and config files 

Corrections to config file substitutions. Use “kubernetes” as a fake component name so we can more easily substitute “kubernetesconf” 

Reorder YAML to make a bit more sense. Allow for optional components, and a config file that we don’t think exists.