Make it possible to cause node-inspector to listen on HTTPS

Both a key and cert must be specified for the node-inspector. If they are specified, the server will startup listening on https rather than http.
I don't know why it didn't do it with 'server-key' and 'server-cert', but using 'ssl-key' and 'ssl-cert' causes the rc() call to return odd (but predictable) results.  This is going to affect how I actually make it work with these keys.