MDEV-29876 : Galera test failure on galera_sst_encrypted

AES block cipher mode CTR is available at the moment
only from OpenSSL 1.0.1. Do not run this testcase
using CTR combination if it is not available.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>

mysql-test/suite/galera/disabled.def

@@ -12,7 +12,6 @@
 
 galera_as_slave_ctas : MDEV-28378 timeout
 galera_pc_recovery : MDEV-25199 cluster fails to start up
-galera_sst_encrypted : MDEV-29876 Galera test failure on galera_sst_encrypted
 galera_var_node_address : MDEV-20485 Galera test failure
 galera_sequences : MDEV-32561 WSREP FSM failure: no such a transition REPLICATING -> COMMITTED
 galera_shutdown_nonprim : MDEV-32635 galera_shutdown_nonprim: mysql_shutdown failed

mysql-test/suite/galera/suite.pm

@@ -70,13 +70,17 @@ push @::global_suppressions,
 sub which($) { return `sh -c "command -v $_[0]"` }
 
 sub skip_combinations {
-  my %skip = ();
+  my @combinations;
+
   $skip{'include/have_mariabackup.inc'} = 'Need socket statistics utility'
             unless which("lsof") || which("sockstat") || which("ss");
   $skip{'include/have_stunnel.inc'} = "Need 'stunnel' utility"
             unless which("stunnel");
   $skip{'include/have_qpress.inc'} = "Need 'qpress' utility"
             unless which("qpress");
+  $skip{'../encryption/include/have_file_key_management_plugin.combinations'} = [ 'ctr' ]
+    unless $::mysqld_variables{'version-ssl-library'} =~ /OpenSSL (\S+)/
+       and $1 ge "1.0.1";
   %skip;
 }