8327946: containers/docker/TestJFREvents.java fails when host kernel …

…config vm.swappiness=0 after 8325139

According to the docker document(https://docs.docker.com/config/containers/resource_constraints/#--memory-swappiness-details), the default value of --memory-swappiness is inherited from the host machine.
So, when the the kervel config vm.swappiness=0 on the host machine, this testcase will fail, because of docker container can not use swap memory, the deafult value of --memory-swappiness is 0.

Signed-off-by: sendaoYan <yansendao.ysd@alibaba-inc.com>

test/hotspot/jtreg/containers/docker/TestJFREvents.java

@@ -221,6 +221,8 @@ private static void testSwapMemory(String memValueToSet, String swapValueToSet,
  commonDockerOpts()
  .addDockerOpts("--memory=" + memValueToSet)
  .addDockerOpts("--memory-swap=" + swapValueToSet)
+ //The default memory-swappiness vaule is inherited from the host machine, which maybe 0
+ .addDockerOpts("--memory-swappiness=60")
  .addClassOptions("jdk.SwapSpace"));
  out.shouldHaveExitValue(0)
  .shouldContain("totalSize = " + expectedTotalValue)