omnibus 7.3.2 - need to be able to secure https access with ssl_verify_client

Our site requires that access to gitlab be restricted to users with ssl keys signed by our ca. Until lately, I was using the source distribution with apache/passenger, and this worked very well. Now, I have switched to the omnibus distribution, and discovered that it does not support this configuration, and that adding any values in gitlab.rb (as documented) for nginx that are not in the default fails.

This is very simple, it would require adding the following values in the gitlab-http template and default.rb ssl_client_certificate ssl_verify_client ssl_verify_depth