Expose more Cowboy listener options in Cuttlefish schema

Part of #596.

[#159556318]

Author: michaelklishin

priv/schema/rabbitmq_management.schema

@@ -56,6 +56,9 @@
 {mapping, "management.listener.server.request_timeout", "rabbitmq_management.listener.cowboy_opts.request_timeout",
     [{datatype, integer}, {validators, ["non_negative_integer"]}]}.
 
+{mapping, "management.listener.server.shutdown_timeout", "rabbitmq_management.listener.cowboy_opts.shutdown_timeout",
+    [{datatype, integer}, {validators, ["non_negative_integer"]}]}.
+
 {mapping, "management.listener.server.max_keepalive", "rabbitmq_management.listener.cowboy_opts.max_keepalive",
     [{datatype, integer}, {validators, ["non_negative_integer"]}]}.
 

test/config_schema_SUITE_data/rabbitmq_management.snippets

@@ -157,6 +157,15 @@
   ], [rabbitmq_management]
  },
 
+ {server_opts_shutdown_timeout,
+  "management.listener.server.shutdown_timeout = 7000",
+  [
+   {rabbitmq_management, [
+                          {listener, [{cowboy_opts, [{shutdown_timeout, 7000}]}]}
+                         ]}
+  ], [rabbitmq_management]
+ },
+
  {server_opts_max_keepalive,
   "management.listener.server.max_keepalive = 120",
   [