[MDEV-6877] Added tests for binlog_row_image using noblobs switch

mysql-test/include/rpl_row_img_general_loop.inc

@@ -0,0 +1,42 @@
+#
+# This is a helper script for rpl_row_img.test. It creates
+# all combinations MyISAM / InnoDB in a three server replication 
+# chain. Each engine combination is tested against the current
+# seetings for binlog_row_image (on each server). 
+#
+# The test script that is executed on every combination is the
+# only argument to this wrapper script. See below.
+# 
+# This script takes one parameter:
+#  - $row_img_test_script
+#    the name of the test script to include in every combination
+#
+# Sample usage:
+#   -- let $row_img_test_script= extra/rpl_tests/rpl_row_img.test
+#   -- source include/rpl_row_img_general_loop.test
+
+
+-- let $engine_type_a= 2
+-- let $server_1_engine=  MyISAM
+while($engine_type_a)
+{
+  -- let $engine_type_b= 2
+  -- let $server_2_engine=  MyISAM
+  while($engine_type_b)
+  {
+    -- let $engine_type_c= 2
+    -- let $server_3_engine=  MyISAM
+    while($engine_type_c)
+    {
+      -- echo ### engines: $server_1_engine, $server_2_engine, $server_3_engine
+      -- source $row_img_test_script
+
+      -- let $server_3_engine= InnoDB
+      -- dec $engine_type_c
+    }
+    -- let $server_2_engine= InnoDB
+    -- dec $engine_type_b
+  }
+  -- let $server_1_engine= InnoDB
+  -- dec $engine_type_a
+}