Replace haproxy ConfigMap example to avoid proxying 3rd party websites

[BretFisher]

In lectures "Creating a ConfigMap" and "Using a ConfigMap", we use a haproxy.cfg to proxy ibm.fr and google.com. It's become a fact of modern popular websites with things like CloudFlare in front of them... they don't allow easy proxying on port 80 any more.

We need to eventually replace this example with one where we're just proxying other pods rather than 3rd party websites. That way we can better control the demo environment and don't need to worry if websites change how they behave when a proxy accesses them on port 80. Jerome's already done this with blue/green example.

Original Q&A