gss_krb5: Advertise triple-des enctype support in the rpcsec_gss/krb5 upcall

Update the upcall info indicating which Kerberos enctypes the kernel
supports.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/auth_gss/gss_krb5_mech.c

@@ -575,7 +575,7 @@ static struct gss_api_mech gss_kerberos_mech = {
 	.gm_ops		= &gss_kerberos_ops,
 	.gm_pf_num	= ARRAY_SIZE(gss_kerberos_pfs),
 	.gm_pfs		= gss_kerberos_pfs,
-	.gm_upcall_enctypes = "enctypes=3,1,2 ",
+	.gm_upcall_enctypes = "enctypes=16,3,1,2 ",
 };
 
 static int __init init_kerberos_module(void)