Previous to this change, `Geth: WARN [06-25|16:46:26] origin 'embark' not allowed on WS-RPC interface` would appear in the logs when the module was run while disabled.
Updated the cors component so that when `rpcCorsDomain` and `wsOrigins` are set to `'auto'`, and all components are disabled `rpcCorsDomain` and `wsOrigins` are passed as a null parameter to geth as opposed to being passed as `'auto'`.