public static HttpClientBuilder create(Supplier<SSLContext> sslContext, String userAgent) {
        return create(sslContext, new DefaultHostnameVerifier(), userAgent);
    }
Like {@link VespaHttpClientBuilder}, but with standard TLS based on provided SSL context.

@author jonmv
http-utils/src/main/java/ai/vespa/util/http/hc5/DefaultHttpClientBuilder.java