MENT-458 MTR Big test "spider/bugfix.sql_mode_mariadb & myself" are both...

MENT-458 MTR Big test "spider/bugfix.sql_mode_mariadb & myself" are both failing on Azure MTR pipeline

Support the dash number of MariaDB versions by Spider's tests

storage/spider/mysql-test/spider/include/init_spider.inc

@@ -131,6 +131,11 @@ if (!$VERSION_COMPILE_OS_WIN)
 
 let $SERVER_NAME=
   `SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(version(), '-', 2), '-', -1)`;
+if (`SELECT IF('$SERVER_NAME' REGEXP '^[0-9]+\$', 1, 0)`)
+{
+  let $SERVER_NAME=
+    `SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(version(), '-', 3), '-', -1)`;
+}
 let $SERVER_MAJOR_VERSION=
   `SELECT SUBSTRING_INDEX(version(), '.', 1)`;
 let $SERVER_MINOR_VERSION=