MDEV-34841 : Enable working Galera tests

* Fixes galera.galera_bf_kill_debug test case.
* Enable galera_ssl_upgrade, galera_ssl_reload, galera_pc_bootstrap
* Add MDEV to disabled tests that miss it

P.S. This commit contains additional changes compared
to the similar commit for 10.5 branch.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>

mysql-test/suite/galera/disabled.def

@@ -12,8 +12,6 @@
 
 galera_as_slave_ctas : MDEV-28378 timeout
 galera_pc_recovery : MDEV-25199 cluster fails to start up
-galera_bf_kill_debug : timeout after 900 seconds
-galera_ssl_upgrade : [Warning] Failed to load slave replication state from table mysql.gtid_slave_pos: 130: Incorrect file format 'gtid_slave_pos'
 galera_sequences : MDEV-32561 WSREP FSM failure: no such a transition REPLICATING -> COMMITTED
 galera_concurrent_ctas : MDEV-32779 galera_concurrent_ctas: assertion in the galera::ReplicatorSMM::finish_cert()
 galera_as_slave_replay : MDEV-32780 galera_as_slave_replay: assertion in the wsrep::transaction::before_rollback()

mysql-test/suite/galera/r/galera_bf_kill_debug.result

@@ -22,16 +22,19 @@ update t1 set b= 1 where a=1;
 connection node_2b;
 SET SESSION DEBUG_SYNC = "now WAIT_FOR sync.before_wsrep_thd_abort_reached";
 connection node_2;
-SET DEBUG_SYNC= 'before_awake_no_mutex SIGNAL awake_reached WAIT_FOR continue_kill';
+SET DEBUG_SYNC= 'wsrep_kill_before_awake_no_mutex SIGNAL awake_reached WAIT_FOR continue_kill';
 connection node_2b;
 SET DEBUG_SYNC='now WAIT_FOR awake_reached';
 SET GLOBAL debug_dbug = "";
 SET DEBUG_SYNC = "now SIGNAL signal.before_wsrep_thd_abort";
+connection node_1;
+COMMIT;
+connection node_2b;
 SET DEBUG_SYNC = "now SIGNAL continue_kill";
 connection node_2;
 connection node_2a;
 select * from t1;
-connection node_2;
+connection node_2b;
 SET DEBUG_SYNC = "RESET";
 drop table t1;
 disconnect node_2a;

mysql-test/suite/galera/t/galera_bf_kill_debug.test

@@ -66,7 +66,7 @@ SET SESSION DEBUG_SYNC = "now WAIT_FOR sync.before_wsrep_thd_abort_reached";
 #
 # pause KILL execution before awake
 #
-SET DEBUG_SYNC= 'before_awake_no_mutex SIGNAL awake_reached WAIT_FOR continue_kill';
+SET DEBUG_SYNC= 'wsrep_kill_before_awake_no_mutex SIGNAL awake_reached WAIT_FOR continue_kill';
 --disable_query_log
 --send_eval KILL $k_thread
 --enable_query_log
@@ -78,6 +78,11 @@ SET DEBUG_SYNC='now WAIT_FOR awake_reached';
 # release applier and KILL operator
 SET GLOBAL debug_dbug = "";
 SET DEBUG_SYNC = "now SIGNAL signal.before_wsrep_thd_abort";
+
+--connection node_1
+COMMIT;
+
+--connection node_2b
 SET DEBUG_SYNC = "now SIGNAL continue_kill";
 
 --connection node_2
@@ -87,7 +92,7 @@ SET DEBUG_SYNC = "now SIGNAL continue_kill";
 --error 0,1213,2013
 select * from t1;
 
---connection node_2
+--connection node_2b
 SET DEBUG_SYNC = "RESET";
 
 drop table t1;