Update oauth2/src/test/java/feign/auth/oauth2/AbstractKeycloakTest.java

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: hosuaby

oauth2/src/test/java/feign/auth/oauth2/AbstractKeycloakTest.java

@@ -90,8 +90,8 @@ static void initKeycloak() {
   protected static String keycloakHost() {
     String host = keycloak.getHost();
     int port = keycloak.getHttpPort();
-    return String.format("http://%s:%d", host, port);
-  }
+    return "http://%s:%d".formatted(host, port);
+    return "%s/realms/%s".formatted(keycloakHost(), KeyCloakCredentials.REALM);
 
   protected static String issuer() {
     return String.format("%s/realms/%s", keycloakHost(), KeyCloakCredentials.REALM);