When running as an app in CF we can rely on the platform to handle TLS setup, but on a VM currently there is no way to have encrypted traffic.

TPCF-26820

it is angry about  `.` imports. But we do not mind because this is not
production code.

Co-authored-by: Andrea Zucchini <[email protected]>

currently the broker.client is not embedding http client. It never
needed to because the broker was written as a CF app and therefore
never had to consider handling self signed certs. But since we are
changing towards supporting VM based deployment, we need to think
about how our test client will handle self signed certs. This seems
to be the path of least resistance, by embedding an http client in
the broker client struct, we can rely on setting the embedded clients
transport config to allow for "insecure" connecions.