8268536: mark hotspot serviceability/dcmd tests which ignore external VM flags

Reviewed-by: sspitsyn

Author: iignatev

test/hotspot/jtreg/serviceability/dcmd/compiler/CodeHeapAnalyticsParams.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,6 +26,7 @@
 /*
  * @test CodeHeapAnalyticsParams
  * @summary Test the Compiler.CodeHeap_Analytics command
+ * @requires vm.flagless
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  *          java.management

test/hotspot/jtreg/serviceability/dcmd/gc/RunFinalizationTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -30,6 +30,7 @@
 /*
  * @test
  * @summary Test of diagnostic command GC.run_finalization
+ * @requires vm.flagless
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  *          java.compiler