Remove provider defaults check from 'galera_defaults' MTR test

From time to time Galera adds new parameters or changes defaults to
existing ones. Every time this happens galera_defaults test needs a
fix (and a commit) because it insists on checking these defaults.
This is making life hard because any Galera update may require a fix
to MariaDB code even though it is totally unrelated and defeats the
whole idea of a provider living its own life.
This commit removes checking for provider defaults to avoid false
positive failures on MariaDB side.

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

@@ -52,4 +52,3 @@ WSREP_SST_DONOR
 WSREP_SST_DONOR_REJECTS_QUERIES	OFF
 WSREP_SST_METHOD	rsync
 WSREP_SYNC_WAIT	15
-<BASE_DIR>; <BASE_HOST>; <BASE_PORT>; cert.log_conflicts = no; debug = no; evs.auto_evict = 0; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.delay_margin = PT1S; evs.delayed_keep_period = PT30S; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT30S; evs.info_log_mask = 0; evs.install_timeout = PT15S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 3; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT10S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 0; evs.view_forget_timeout = P1D; <GCACHE_DIR>; gcache.keep_pages_size = 0; gcache.mem_size = 0; <GCACHE_NAME>; gcache.page_size = 128M; gcache.recover = no; gcache.size = 10M; gcomm.thread_prio = ; gcs.fc_debug = 0; gcs.fc_factor = 1.0; gcs.fc_limit = 16; gcs.fc_master_slave = no; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; <GCS_RECV_Q_HARD_LIMIT>; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = no; <GMCAST_LISTEN_ADDR>; gmcast.mcast_addr = ; gmcast.mcast_ttl = 1; gmcast.peer_timeout = PT3S; gmcast.segment = 0; gmcast.time_wait = PT5S; gmcast.version = 0; <IST_RECV_ADDR>; pc.announce_timeout = PT3S; pc.checksum = false; pc.ignore_quorum = false; pc.ignore_sb = false; pc.linger = PT20S; pc.npvo = false; pc.recovery = true; pc.version = 0; pc.wait_prim = true; pc.wait_prim_timeout = PT30S; pc.weight = 1; protonet.backend = asio; protonet.version = 0; repl.causal_read_timeout = PT90S; repl.commit_order = 3; repl.key_format = FLAT8; repl.max_ws_size = 2147483647; <REPL_PROTO_MAX>;socket.checksum = 2; socket.recv_buf_size = 212992; 

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

@@ -36,26 +36,3 @@ AND VARIABLE_NAME NOT IN (
         'WSREP_PATCH_VERSION'
 )
 ORDER BY VARIABLE_NAME;
-
-# wsrep_provider_options
-#
-# We replace the ones that vary from run to run with placeholders
-
---let _WSREP_PROVIDER_OPTIONS = `SELECT @@wsrep_provider_options`
---perl
-	use strict;
-	my $wsrep_provider_options = $ENV{'_WSREP_PROVIDER_OPTIONS'};
-	$wsrep_provider_options =~ s/base_dir = .*?;/<BASE_DIR>;/sgio;
-	$wsrep_provider_options =~ s/base_host = .*?;/<BASE_HOST>;/sgio;
-	$wsrep_provider_options =~ s/base_port = .*?;/<BASE_PORT>;/sgio;
-	$wsrep_provider_options =~ s/gcache\.dir = .*?;/<GCACHE_DIR>;/sgio;
-	$wsrep_provider_options =~ s/gcache\.name = .*?;/<GCACHE_NAME>;/sgio;
-	$wsrep_provider_options =~ s/gmcast\.listen_addr = .*?;/<GMCAST_LISTEN_ADDR>;/sgio;
-	$wsrep_provider_options =~ s/gcs\.recv_q_hard_limit = .*?;/<GCS_RECV_Q_HARD_LIMIT>;/sgio;
-	$wsrep_provider_options =~ s/ist\.recv_addr = .*?;/<IST_RECV_ADDR>;/sgio;
-	$wsrep_provider_options =~ s/evs\.evict = .*?;/<EVS_EVICT>;/sgio;
-	$wsrep_provider_options =~ s/signal = .*?;\s*//sgio;
-	$wsrep_provider_options =~ s/dbug = .*?;\s*//sgio;
-	$wsrep_provider_options =~ s/repl.proto_max = .*?;\s*/<REPL_PROTO_MAX>;/sgio;
-	print $wsrep_provider_options."\n";
-EOF