@Test
  public void addAmbariServerIdentity_CreateAmbariPrincipal() throws Exception {
    addAmbariServerIdentity(Collections.singletonMap(KerberosHelper.CREATE_AMBARI_PRINCIPAL, "true"));
  }
Tests that when regenerating keytabs for an upgrade, that the retry allowed
boolean is set on the tasks created.

@throws Exception
ambari-server/src/test/java/org/apache/ambari/server/controller/KerberosHelperTest.java