8261505: Test test/hotspot/jtreg/gc/parallel/TestDynShrinkHeap.java killed by Linux OOM Killer

Backport-of: ebaa58d9c07f1ac3846bbf8f3736b1b3a5e0a4fc

Author: mychris

test/hotspot/jtreg/gc/parallel/TestDynShrinkHeap.java

@@ -26,7 +26,7 @@
 /**
  * @test TestDynShrinkHeap
  * @bug 8016479
- * @requires vm.gc.Parallel
+ * @requires vm.gc.Parallel & os.maxMemory > 1G
  * @summary Verify that the heap shrinks after full GC according to the current values of the Min/MaxHeapFreeRatio flags
  * @modules java.base/jdk.internal.misc
  * @modules jdk.management