This commit causes the docker driver to return undetected before it
first establishes a connection to the docker daemon.
This fixes a bug where hosts without docker installed would return as
unhealthy, rather than undetected.
- docker fingerprint issues a docker api system info call to get the
list of supported OCI runtimes.
- OCI runtimes are reported as comma separated list of names
- docker driver is aware of GPU runtime presence
- docker driver throws an error when user tries to run container with
GPU, when GPU runtime is not present
- docker GPU runtime name is configurable
