Don't allow defining 'routes' toplevel

Doesn't make much sense to deploy more than one app with the same route (this will result in an error, you can only bind one thing to a route / host).

headless-services/manifest-yaml-language-server/src/main/java/org/springframework/ide/vscode/manifest/yaml/ManifestYmlSchema.java

@@ -52,7 +52,7 @@ public class ManifestYmlSchema implements YamlSchema {
 	public final AbstractType t_route_string;
 
 	private static final Set<String> TOPLEVEL_EXCLUDED = ImmutableSet.of(
-		"name", "host", "hosts"
+		"name", "host", "hosts", "routes"
 	);
 
 	@Override

headless-services/manifest-yaml-language-server/src/test/java/org/springframework/ide/vscode/manifest/yaml/ManifestYamlEditorTest.java

@@ -291,8 +291,8 @@ public class ManifestYamlEditorTest {
 				// ---------------
 				"random-route: <*>",
 				// ---------------
-				"routes:\n"+
-				"- route: <*>",
+//				"routes:\n"+
+//				"- route: <*>",
 				// ---------------
 				"services:\n"+
 				"- <*>",