My ost-config.php is ancient [48 lines] and does not have the SSL option in it. I've noticed that there is SSL option in the sample config file. The installer does not set these options. They would be done by whoever sets up the osTicket instance manually.
I can't even tell you if it works... but I imagine that it wouldn't be there if did not. Those additional config options in the file have been added since I installed initially and are fairly "undocumented features" last I checked.