Fully convert to data plane api

Change global ACL to a map to realtime update with data plane api
Change how on setartup servers are registered in lua

src/lua/scripts/register-servers.lua

@@ -0,0 +1,41 @@
+package.path = package.path  .. "./?.lua;/etc/haproxy/scripts/?.lua;/etc/haproxy/libs/?.lua"
+
+local pow_difficulty = tonumber(os.getenv("POW_DIFFICULTY") or 18)
+
+-- setup initial server backends based on hosts.map
+function setup_servers()
+	if pow_difficulty < 8 then
+		error("POW_DIFFICULTY must be > 8. Around 16-32 is better")
+	end
+	local backend_name = os.getenv("BACKEND_NAME")
+	local server_prefix = os.getenv("SERVER_PREFIX")
+	if backend_name == nil or server_prefix == nil then
+		return;
+	end
+	local handle = io.open("/etc/haproxy/map/hosts.map", "r")
+	local line = handle:read("*line")
+	local counter = 1
+	-- NOTE: using tcp socket to interact with runtime API because lua can't add servers
+	local tcp = core.tcp();
+	tcp:settimeout(1);
+	tcp:connect("127.0.0.1", 2000); --TODO: configurable port
+	while line do
+		local domain, backend_host = line:match("([^%s]+)%s+([^%s]+)")
+		-- local host_split = utils.split(backend_host, ":")
+		-- local backend_hostname = host_split[1]
+		-- local backend_port = host_split[2]
+		core.set_map("/etc/haproxy/map/backends.map", domain, server_prefix..counter)
+		-- local proxy = core.proxies[backend_name].servers[server_prefix..counter]
+		-- proxy:set_addr(backend_hostname, backend_port)
+		-- proxy:set_ready()
+		local server_name = "servers/websrv"..counter
+		tcp:send(string.format("add server %s %s check\n", server_name, backend_host))
+		tcp:send(string.format("enable server %s\n", server_name))
+		line = handle:read("*line")
+		counter = counter + 1
+	end
+	handle:close()
+	tcp:close()
+end
+
+core.register_task(setup_servers)