Currently when testing with TLS, because we don't support the tlsCAFile option, we use sslVerifyCertificate=false. We can no longer do this if we want to test OCSP support (see https://jira.mongodb.org/browse/WRITING-4242), so as a first step, we should convert our existing TLS tests so that we add the relevant certificates to the Windows system store so that we can test TLS without sslVerifyCertificate=false.