UNDERTOW-1581: Fix RoutingHandler allMethodsMatcher validation

Updates the allMethodsMatcher to lookup templates using the
match method instead of get in order to normalize the input.

Previously registration would throw an exception when routes
were added for the same path template with different parameter names
despite being equivalent.

From undertow-io/undertow#799

core/src/main/java/io/undertow/server/RoutingHandler.java

@@ -120,7 +120,7 @@ public synchronized RoutingHandler add(String method, String template, HttpHandl
         if (res == null) {
             matcher.add(template, res = new RoutingMatch());
         }
-        if (allMethodsMatcher.get(template) == null) {
+        if (allMethodsMatcher.match(template) == null) {
             allMethodsMatcher.add(template, res);
         }
         res.defaultHandler = handler;
@@ -152,7 +152,7 @@ public synchronized RoutingHandler add(String method, String template, Predicate
         if (res == null) {
             matcher.add(template, res = new RoutingMatch());
         }
-        if (allMethodsMatcher.get(template) == null) {
+        if (allMethodsMatcher.match(template) == null) {
             allMethodsMatcher.add(template, res);
         }
         res.predicatedHandlers.add(new HandlerHolder(predicate, handler));
@@ -186,7 +186,7 @@ public synchronized RoutingHandler addAll(RoutingHandler routingHandler) {
             // If we use allMethodsMatcher.addAll() we can have duplicate
             // PathTemplates which we want to ignore here so it does not crash.
             for (PathTemplate template : entry.getValue().getPathTemplates()) {
-                if (allMethodsMatcher.get(template.getTemplateString()) == null) {
+                if (allMethodsMatcher.match(template.getTemplateString()) == null) {
                     allMethodsMatcher.add(template, new RoutingMatch());
                 }
             }

core/src/test/java/io/undertow/server/handlers/RoutingHandlerTestCase.java

@@ -126,6 +126,12 @@ public void handleRequest(HttpServerExchange exchange) throws Exception {
                         exchange.writeAsync("posted foo");
                     }
                 })
+                .add(HttpMethodNames.POST, "/foo/{baz}", new HttpHandler() {
+                    @Override
+                    public void handleRequest(HttpServerExchange exchange) throws Exception {
+                        exchange.writeAsync("foo-path" + exchange.getQueryParameters().get("bar"));
+                    }
+                })
                 .add(HttpMethodNames.GET, "/foo/{bar}", new HttpHandler() {
                     @Override
                     public void handleRequest(HttpServerExchange exchange) throws Exception {