Add back dataplaneapi in anticipation of using it to control haproxy rather than haproxy-sdk runtime socket

haproxy/dataplaneapi.hcl

@@ -0,0 +1,27 @@
+config_version = 2
+name = "basedflare"
+mode = "single"
+
+dataplaneapi {
+  host = "127.0.0.1"
+  port = 2001
+  user "admin" {
+    insecure = true
+    password = "admin"
+  }
+  transaction {
+    transaction_dir = "/tmp/haproxy"
+  }
+  advertised {}
+}
+
+haproxy {
+  config_file = "/etc/haproxy/haproxy.cfg"
+  haproxy_bin = "/usr/local/sbin/haproxy"
+  reload {
+    reload_delay    = 5
+    reload_cmd      = "service haproxy reload"
+    restart_cmd     = "service haproxy restart"
+    reload_strategy = "custom"
+  }
+}