Allow specifying or ignoring certificate validation with HTTPS

I currently run OpenSTF on HTTPS using a home grown, self signed certificate. Unfortunately, I can't seem to run in this configuration (easily) with the OpenSTF plugin for Jenkins.

It would be nice if one of the two following options was available :

1. A check box that allowed me to disable server certificate validation. (Along with a nasty warning about the security implications of doing so!)

2. An easy way to upload the certificate chain in to Jenkins so that it gets used by the OpenSTF plugin for the purposes of validation.