Dockerized, loadbalanced, AJP-proxied Tomcats and HTTPD

In the demo, we show how one dockerized httpd loadbalances two dockerized Tomcats:

• AJP is the loadbalancing protocol
• mod_proxy does the AJP proxying on the httpd side
• mod_proxy_balancer handles the loadbalancing on the httpd side
• Tomcat AJP connector handles the AJP protocol with httpd.
• A jvmRoute is dynamically configured on the Tomcat side to provide sticky sessions.

See GitHub README for highly detailed description and tutorial.