@Before
  public void before() throws Exception {
    int[] ports = getRandomAvailableTCPPorts(3);
    defaultLocatorPort = ports[0];
    nonDefaultLocatorPort = ports[1];
    jmxManagerPort = ports[2];
  }
Regression tests for stopping a JMX Manager process launched with {@link LocatorLauncher}.

<p>
Confirms fix for <bold>Locator not stopping correctly if jmx-manager-port=0</bold>

<p>
Refactored from LocatorLauncherAssemblyIntegrationTest which used to be in geode-assembly.
geode-core/src/integrationTest/java/org/apache/geode/distributed/LocatorLauncherJmxManagerRemoteRegressionTest.java