[FABRIC-814] PaxExam may run test before support bundles are installed
switched docs to point to 328
#604 refactored the code a little so the haproxy is a separate bundle and feature from the http proxy
#604 fixed up class loader gremlins so the separate http/haproxy bundles work
#604 fixed the test case so it auto-generates haproxy files
#604 removed the ZK path attribute from the FabricHttpMappingRule so we can be more generic
#604 more refactoring so we can be more generic; HttpMappingRuleBase is kinda fabric agnostic now apart from the SimplePathTemplate