Added server CLI with for custom command implementation.
Added server CLI with for custom command implementation.

Former-commit-id: 6806a143656539102d9e641f1d40cda43ed03350
subutai-io/Subutai,subutai-io/Subutai,subutai-io/base,subutai-io/base,subutai-io/Subutai,subutai-io/base,subutai-io/base,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai