Switched to maps for logging

apps/consul_proxy/src/consul_proxy.erl

apps/consul_proxy/src/consul_proxy_app.erl

apps/consul_proxy/src/consul_proxy_codec_formatter.erl

apps/consul_proxy/src/consul_proxy_loadbalancer.erl

apps/consul_proxy/src/consul_proxy_request_formatter.erl

apps/consul_proxy/src/consul_proxy_router.erl

apps/consul_proxy/src/consul_proxy_sup.erl