update wsrep.wsrep_provider_plugin_defaults to 26.4.16

mysql-test/suite/wsrep/r/wsrep_provider_plugin_defaults.result

@@ -10,7 +10,7 @@ SELECT COUNT(*) FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME LIK
 'wsrep_provider_signal',
 'wsrep_provider_gmcast_listen_addr');
 COUNT(*)
-83
+84
 SELECT * FROM INFORMATION_SCHEMA.SYSTEM_VARIABLES
 WHERE VARIABLE_NAME LIKE 'wsrep_provider_%' AND VARIABLE_NAME NOT IN (
 'wsrep_provider',
@@ -998,6 +998,21 @@ ENUM_VALUE_LIST	NULL
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
 GLOBAL_VALUE_PATH	NULL
+VARIABLE_NAME	WSREP_PROVIDER_PROTONET_BACKEND
+SESSION_VALUE	NULL
+GLOBAL_VALUE	asio
+GLOBAL_VALUE_ORIGIN	COMPILE-TIME
+DEFAULT_VALUE	asio
+VARIABLE_SCOPE	GLOBAL
+VARIABLE_TYPE	VARCHAR
+VARIABLE_COMMENT	Wsrep provider option
+NUMERIC_MIN_VALUE	NULL
+NUMERIC_MAX_VALUE	NULL
+NUMERIC_BLOCK_SIZE	NULL
+ENUM_VALUE_LIST	NULL
+READ_ONLY	YES
+COMMAND_LINE_ARGUMENT	REQUIRED
+GLOBAL_VALUE_PATH	NULL
 VARIABLE_NAME	WSREP_PROVIDER_PROTONET_VERSION
 SESSION_VALUE	NULL
 GLOBAL_VALUE	0

mysql-test/suite/wsrep/t/wsrep_provider_plugin_defaults.test

 --source include/have_wsrep.inc
 --source include/have_innodb.inc
 
---let $galera_version=26.4.14
+--let $galera_version=26.4.16
 source include/check_galera_version.inc;
 
 SELECT COUNT(*) FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME LIKE 'wsrep_provider%' AND VARIABLE_NAME NOT IN (