try to fix version detection

mysql-test/suite/wsrep/include/check_galera_version.inc

@@ -21,8 +21,8 @@ SELECT CAST(REGEXP_REPLACE(@GALERA_VERSION,'^(\\d+)\\.(\\d+)\\.(\\d+).*','\\3')
 
 # Actual
 SELECT VARIABLE_VALUE INTO @ACTUAL_GALERA_VERSION FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME LIKE 'wsrep_provider_version';
-SELECT CAST(REGEXP_REPLACE(@ACTUAL_GALERA_VERSION,'^(\\d+)\\.(\\d+).*','\\1') AS UNSIGNED) INTO @ACTUAL_GALERA_MINOR_VERSION;
-SELECT CAST(REGEXP_REPLACE(@ACTUAL_GALERA_VERSION,'^(\\d+)\\.(\\d+).*','\\2') AS UNSIGNED) INTO @ACTUAL_GALERA_RELEASE_VERSION;
+SELECT CAST(REGEXP_REPLACE(@ACTUAL_GALERA_VERSION,'^[\\d\\.]*(\\d+)\\.\\d+.*','\\1') AS UNSIGNED) INTO @ACTUAL_GALERA_MINOR_VERSION;
+SELECT CAST(REGEXP_REPLACE(@ACTUAL_GALERA_VERSION,'^[\\d\\.]*\\.(\\d+).*','\\1') AS UNSIGNED) INTO @ACTUAL_GALERA_RELEASE_VERSION;
 
 # For testing
 #SELECT @GALERA_MAJOR_VERSION;