disable entitlements in example plugin tests

Author: mosche

build-tools/src/main/java/org/elasticsearch/gradle/test/TestBuildInfoPlugin.java

@@ -60,8 +60,6 @@ public void apply(Project project) {
         project.getTasks()
             .withType(Test.class)
             .matching(test -> List.of("test", "internalClusterTest").contains(test.getName()))
-            .configureEach(test -> {
-                test.systemProperty("es.entitlement.enableForTests", "true");
-            });
+            .configureEach(test -> test.getSystemProperties().putIfAbsent("es.entitlement.enableForTests", "true"));
     }
 }

plugins/examples/build.gradle

@@ -20,6 +20,11 @@ subprojects {
     targetCompatibility = 21
   }
 
+  test {
+    // testing with entitlements doesn't work for example plugins ES-12453
+    systemProperty 'es.entitlement.enableForTests', 'false'
+  }
+
   repositories {
     // Only necessary when building plugins against SNAPSHOT versions of Elasticsearch
     if (gradle.includedBuilds.isEmpty()) {