Use a consistent ordering in policy manager exclulsive tests

Author: rjernst

libs/entitlement/src/test/java/org/elasticsearch/entitlement/runtime/policy/PolicyManagerTests.java

@@ -29,6 +29,7 @@
 import java.net.URLClassLoader;
 import java.nio.file.Path;
 import java.util.Arrays;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -448,41 +449,42 @@ public void testFilesEntitlementsWithExclusive() {
         var baseTestPath = Path.of("/base").toAbsolutePath();
         var testPath1 = Path.of("/base/test").toAbsolutePath();
         var testPath2 = Path.of("/base/test/foo").toAbsolutePath();
-        var iae = expectThrows(
-            IllegalArgumentException.class,
-            () -> new PolicyManager(
-                createEmptyTestServerPolicy(),
-                List.of(),
-                Map.of(
-                    "plugin1",
-                    new Policy(
-                        "test",
+        var plugins = new LinkedHashMap<String, Policy>();
+        plugins.put("plugin1",
+            new Policy(
+                "test",
+                List.of(
+                    new Scope(
+                        "test.module1",
                         List.of(
-                            new Scope(
-                                "test.module1",
-                                List.of(
-                                    new FilesEntitlement(
-                                        List.of(FilesEntitlement.FileData.ofPath(testPath1, FilesEntitlement.Mode.READ).withExclusive(true))
-                                    )
-                                )
+                            new FilesEntitlement(
+                                List.of(FilesEntitlement.FileData.ofPath(testPath1, FilesEntitlement.Mode.READ).withExclusive(true))
                             )
                         )
-                    ),
-                    "plugin2",
-                    new Policy(
-                        "test",
+                    )
+                )
+            ));
+        plugins.put(
+            "plugin2",
+            new Policy(
+                "test",
+                List.of(
+                    new Scope(
+                        "test.module2",
                         List.of(
-                            new Scope(
-                                "test.module2",
-                                List.of(
-                                    new FilesEntitlement(
-                                        List.of(FilesEntitlement.FileData.ofPath(testPath1, FilesEntitlement.Mode.READ).withExclusive(true))
-                                    )
-                                )
+                            new FilesEntitlement(
+                                List.of(FilesEntitlement.FileData.ofPath(testPath1, FilesEntitlement.Mode.READ).withExclusive(true))
                             )
                         )
                     )
-                ),
+                )
+            ));
+        var iae = expectThrows(
+            IllegalArgumentException.class,
+            () -> new PolicyManager(
+                createEmptyTestServerPolicy(),
+                List.of(),
+                plugins,
                 c -> "",
                 Map.of("plugin1", Path.of("modules", "plugin1"), "plugin2", Path.of("modules", "plugin2")),
                 TEST_AGENTS_PACKAGE_NAME,