1915 IPsec kstats shouldn't be persistent

*** 20,29 ****
--- 20,30 ----
   */
  /*
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   * Copyright (c) 2012 Nexenta Systems, Inc. All rights reserved.
+  * Copyright 2017 Joyent, Inc.
   */
  
  #include <sys/types.h>
  #include <sys/stream.h>
  #include <sys/stropts.h>
*** 171,182 ****
  ah_kstat_init(ipsecah_stack_t *ahstack, netstackid_t stackid)
  {
          ipsec_stack_t   *ipss = ahstack->ipsecah_netstack->netstack_ipsec;
  
          ahstack->ah_ksp = kstat_create_netstack("ipsecah", 0, "ah_stat", "net",
!             KSTAT_TYPE_NAMED, sizeof (ah_kstats_t) / sizeof (kstat_named_t),
!             KSTAT_FLAG_PERSISTENT, stackid);
  
          if (ahstack->ah_ksp == NULL || ahstack->ah_ksp->ks_data == NULL)
                  return (B_FALSE);
  
          ahstack->ah_kstats = ahstack->ah_ksp->ks_data;
--- 172,183 ----
  ah_kstat_init(ipsecah_stack_t *ahstack, netstackid_t stackid)
  {
          ipsec_stack_t   *ipss = ahstack->ipsecah_netstack->netstack_ipsec;
  
          ahstack->ah_ksp = kstat_create_netstack("ipsecah", 0, "ah_stat", "net",
!             KSTAT_TYPE_NAMED, sizeof (ah_kstats_t) / sizeof (kstat_named_t), 0,
!             stackid);
  
          if (ahstack->ah_ksp == NULL || ahstack->ah_ksp->ks_data == NULL)
                  return (B_FALSE);
  
          ahstack->ah_kstats = ahstack->ah_ksp->ks_data;