Merge branch 'seekdb_for_test' into 'master'

Seekdb for test

See merge request oceanbase/ob-deploy!805

Author: gys-git

plugins/mysqltest/3.1.0/run_test.py

@@ -363,7 +363,10 @@ def return_true(**kw):
         if opt.get('case_mode'):
             test_env['TENANT'] = opt['case_mode']
             if opt.get('user'):
-                test_env['OBMYSQL_USR'] = str(opt['user'] + '@' + opt['case_mode'])
+                if opt.get('component') == COMP_OB_SEEKDB:
+                    test_env['OBMYSQL_USR'] = str(opt['user'])
+                else:
+                    test_env['OBMYSQL_USR'] = str(opt['user'] + '@' + opt['case_mode'])
             else:
                 test_env['OBMYSQL_USR'] = 'root'
         if 'java' in opt: