@Test
  public void testUpdateClustersToggleKerberosDisable_ManageIdentities() throws Exception {
    testUpdateClustersToggleKerberosDisable(Boolean.TRUE);
  }
Ensure that when the cluster security type updated from KERBEROS to NONE, KerberosHandler.toggleKerberos
IS invoked and identities are managed
ambari-server/src/test/java/org/apache/ambari/server/controller/AmbariManagementControllerImplTest.java