Fix config name for the ip_allowlist, allow old ip_whitelist (#48)

Author: mworrell

src/cowmachine_proxy.erl

@@ -297,6 +297,9 @@ lower(C) -> C.
 	Result :: boolean().
 is_trusted_proxy(Peer) ->
     case application:get_env(cowmachine, proxy_allowlist) of
+        {ok, ip_whitelist} ->
+            % Map old config name
+            is_trusted_proxy(ip_allowlist, Peer);
         {ok, ProxyAllowlist} ->
             is_trusted_proxy(ProxyAllowlist, Peer);
         undefined ->
@@ -305,7 +308,7 @@ is_trusted_proxy(Peer) ->
 
 -spec is_trusted_proxy(Marker, Peer) -> Result when
 	Marker :: ProxyMarker | ProxyAllowlist,
-	ProxyMarker :: any | ip_whitelist | local | none,
+	ProxyMarker :: any | ip_allowlist | local | none,
 	ProxyAllowlist :: list() | binary(),
 	Peer :: inet:ip_address(),
 	Result :: boolean().
@@ -315,7 +318,7 @@ is_trusted_proxy(any, _Peer) ->
     true;
 is_trusted_proxy(local, Peer) ->
     z_ip_address:is_local(Peer);
-is_trusted_proxy(ip_whitelist, Peer) ->
+is_trusted_proxy(ip_allowlist, Peer) ->
     case application:get_env(cowmachine, ip_allowlist) of
         {ok, Allowlist} ->
             z_ip_address:ip_match(Peer, Allowlist);